Engineering Software - CAE & CFD Engineering Software - CAE System & Component Analysis: "Advantage of Technalysis' System and Component Level Analysis Approach Entire system can be easily and quickly modeled and modified using Passage 1D .
The models can be created early in the design cycle to detect potential problems.
A sensitivity analysis can be performed to determine the critical parameters and improve system level performance.
Passage Flow can be used to do further analysis to improve specific component performance, understand and visualize complex flow behavior and solve any flow and heat transfer problems. "
Friday, April 28, 2006
Fluid Flow Software - Flow Modeling - Passage Sysflow for the prediction of� network performance.
Fluid Flow Software - Flow Modeling - Passage Sysflow for the prediction of network performance.: "Fluid Flow Software and Simulation Network Modeling - System Analysis PASSAGE/SYSFLOW Software is a one-dimensional System Fluid Flow and Heat Transfer Analysis program for the prediction of flow network performance.
PASSAGE/SYSFLOW Program provides very useful information in understanding the flow splits in branched flow passages and the overall heat fluxes between components. A 1D flow software is a very efficient and a relatively inexpensive tool for design and analysis.
PASSAGE/SYSFLOW Program is fast, user-friendly and effectively predicts performance in a variety of user-defined networks.
Steady state, compressible and incompressible flow network problems can be solved including heat transfer effects.
Virtually any flow network system and/or sub-system can be modeled using combinations of components included in the standard library.
A numerical model such as PASSAGE SYSFLOW serves as an invaluable tool to study the flow and heat-transfer in complex systems and to optimize the design process in a more cost effective and timely fashion.
Sysflow brochure "
CAE Software - Consulting - Electric Motors & Generators
CAE Software - Consulting - Electric Motors & Generators: "CAE Expertise in Electric Motors and GeneratorsTechnalysis has many years of experience in designing electric motors, generators & alternators Passage Wheel / Duct and Sysflow have been further developed to support these activities and their capabilities have been proven. Combined approach of system and component analysis together with experimental measurements is an essential and powerful tool for electric motor and generator design.
The use of computer analysis to model and predict the flow and heat performance of electric motors before committing to a prototype will greatly reduce the time and cost of product development. With this capability, better engineering decisions can be made and design uncertainties reduced.
Specific experience areas includes system and component analysis and design improvement of the following equipment and its components:
Electric motors
Generators
Alternators
Technalysis company overview brochure"
The use of computer analysis to model and predict the flow and heat performance of electric motors before committing to a prototype will greatly reduce the time and cost of product development. With this capability, better engineering decisions can be made and design uncertainties reduced.
Specific experience areas includes system and component analysis and design improvement of the following equipment and its components:
Electric motors
Generators
Alternators
Technalysis company overview brochure"
Flow Software -CFD - Flow Simulation
Flow Software -CFD - Flow Simulation: "PASSAGE Wheel and Duct Software
PASSAGE / Duct and Wheel Software is a 3D finite element software for analysis of flows through complex stationary and rotating passages.
Potential, Euler, and Navier-Stokes flow equations are solved for incompressible and compressible subsonic to transonic flow regimes, allowing the engineer the ability to include the effects of flow losses in the design process.
A user-friendly, interactive pre-processing module with a built-in 3-D CAD capability supports automatic mesh generation and display.
Calculated fluid properties such as velocity, pressure, entropy, Mach number and blade loading can be interpreted using the interactive post-processing module, which displays easily interpreted color x-y graphs, vector and contour plots.
"
Thursday, April 27, 2006
Passage Freeze Drying Software
Freeze Drying Software: "PASSAGE�Freeze Drying SoftwarePassage/FreezeDrying is a computer program designed for the simulation of freeze drying processes in vials and pans.
Passage/FreezeDrying provides modeling of containers with axisymmetric boundary conditions with both primary and secondary drying simulation capabilities. The software also handles containers with asymmetric boundary conditions, as in the case of vials placed in corners or near the walls of freeze-drying ovens. It is currently limited to primary drying simulations.
The user-friendly, interactive preprocessor accepts externally generated meshes and support automatic entry of material properties, process conditions, and display of geometry.
Passage/FreezeDrying also has user-friendly, interactive post-processing modules which display the computed temperature, vapor concentration, water pressure, and glass transition distributions in the form of contour plots and x-y graphs. Animation of sublimation front movements can also be obtained easily.
FreezeDrying brochure "
CAE Software - Freeze Drying Software
CAE Software - Freeze Drying Software: "Benefits of Freeze Drying SoftwareProvide a tool to predict drying times and process conditions to alleviate 'islands of ice' and glassing of product
Results can be used for FDA process approval
Minimize cost of testing and shorten drying time to increase yield
Provide detailed understanding of primary and secondary drying processes "
Navier-Stokes equations
Navier-Stokes equations : "Navier-Stokes equations
The Navier-Stokes equations, named after Claude-Louis Navier and George Gabriel Stokes, are a set of equations that describe the motion of fluid substances like liquids and gases. These equations establish that changes in momentum (acceleration) of the particles of a fluid are simply the product of changes in pressure and dissipative viscous forces (similar to friction) acting inside the fluid. These viscous forces originate in molecular interactions and dictate how sticky (viscous) a fluid is. Thus, the Navier-Stokes equations are a dynamical statement of the balance of forces acting at any given region of the fluid.
They are one of the most useful sets of equations because they describe the physics of a large number of phenomena of academic and economic interest. They are useful to model weather, ocean currents, water flow in a pipe, motion of stars inside a galaxy, flow around an airfoil (wing). They are also used in the design of aircraft and cars, the study of blood flow, the design of power stations, the analysis of the effects of pollution, etc.
The Navier-Stokes equations are differential equations which describe the motion of a fluid. These equations, unlike algebraic equations, do not seek to establish a relation among the variables of interest (e.g. velocity and pressure), rather they establish relations among the rates of change or fluxes of these quantities. In mathematical terms "
more... http://en.wikipedia.org/wiki/Navier-Stokes
The Navier-Stokes equations, named after Claude-Louis Navier and George Gabriel Stokes, are a set of equations that describe the motion of fluid substances like liquids and gases. These equations establish that changes in momentum (acceleration) of the particles of a fluid are simply the product of changes in pressure and dissipative viscous forces (similar to friction) acting inside the fluid. These viscous forces originate in molecular interactions and dictate how sticky (viscous) a fluid is. Thus, the Navier-Stokes equations are a dynamical statement of the balance of forces acting at any given region of the fluid.
They are one of the most useful sets of equations because they describe the physics of a large number of phenomena of academic and economic interest. They are useful to model weather, ocean currents, water flow in a pipe, motion of stars inside a galaxy, flow around an airfoil (wing). They are also used in the design of aircraft and cars, the study of blood flow, the design of power stations, the analysis of the effects of pollution, etc.
The Navier-Stokes equations are differential equations which describe the motion of a fluid. These equations, unlike algebraic equations, do not seek to establish a relation among the variables of interest (e.g. velocity and pressure), rather they establish relations among the rates of change or fluxes of these quantities. In mathematical terms "
more... http://en.wikipedia.org/wiki/Navier-Stokes
Friday, April 21, 2006
Fluid dynamics
Fluid dynamics - Wikipedia, the free encyclopedia: "Fluid dynamics
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Fluid dynamics is the subdiscipline of fluid mechanics that studies fluids (liquids and gases) in motion. The discipline has a number of subdisciplines, including aerodynamics (the study of gases) and hydrodynamics (the study of liquids). Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft, determining the mass flow rate of petroleum through pipelines, predicting weather patterns. Some of its principles are even used in traffic engineering, where traffic is treated as a continuous fluid.
Fluid dynamics offers a mathematical structure, which underlies these practical disciplines, that embraces empirical and semi-empirical laws, derived from flow measurement, used to solve practical problems. The solution of a fluid dynamics problem typically involves calculating for various properties of the fluid, such as velocity, pressure, density, and temperature, as functions of space and time." more... http://en.wikipedia.org/wiki/Fluid_dynamics
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Fluid dynamics is the subdiscipline of fluid mechanics that studies fluids (liquids and gases) in motion. The discipline has a number of subdisciplines, including aerodynamics (the study of gases) and hydrodynamics (the study of liquids). Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft, determining the mass flow rate of petroleum through pipelines, predicting weather patterns. Some of its principles are even used in traffic engineering, where traffic is treated as a continuous fluid.
Fluid dynamics offers a mathematical structure, which underlies these practical disciplines, that embraces empirical and semi-empirical laws, derived from flow measurement, used to solve practical problems. The solution of a fluid dynamics problem typically involves calculating for various properties of the fluid, such as velocity, pressure, density, and temperature, as functions of space and time." more... http://en.wikipedia.org/wiki/Fluid_dynamics
Computational fluid dynamics
Computational fluid dynamics - Wikipedia, the free encyclopedia: "Computational fluid dynamics
From Wikipedia, the free encyclopedia
(Redirected from Computational Fluid Dynamics)
Jump to: navigation, search
Computational fluid dynamics (CFD) is the use of computers to analyze problems in fluid dynamics.
The most fundamental consideration in CFD is how one treats a continuous fluid in a discretized fashion on a computer. One method is to discretize the spatial domain into small cells to form a volume mesh or grid, and then apply a suitable algorithm to solve the equations of motion (Euler equations for inviscid, and Navier-Stokes equations for viscid flow). In addition, such a mesh can be either irregular (for instance consisting of triangles in 2D, or pyramidal solids in 3D) or regular; the distinguishing characteristic of the former is that each cell must be stored separately in memory. Lastly, if the problem is highly dynamic and occupies a wide range of scales, the grid itself can be dynamically modified in time, as in adaptive mesh refinement methods more... http://en.wikipedia.org/wiki/Computational_Fluid_Dynamics
If one chooses not to proceed with a mesh-based method, a number of alternatives exist, notably :
smoothed particle hydrodynamics, a Lagrangian method of solving fluid problems,
Spectral methods, a technique where the equations are projected onto basis functions like the spherical harmonics and Chebyshev polynomials
Lattice Boltzmann methods, which simulate an equivalent mesoscopic system on a Cartesian grid, instead of solving the macroscopic system (or the real microscopic physics).
It is possible to directly solve the Navier-Stokes equations for laminar flow cases and for turbulent flows when all of the relevant length scales can be contained on the grid (a Direct numerical simulation). In general however, the range of length scale"
From Wikipedia, the free encyclopedia
(Redirected from Computational Fluid Dynamics)
Jump to: navigation, search
Computational fluid dynamics (CFD) is the use of computers to analyze problems in fluid dynamics.
The most fundamental consideration in CFD is how one treats a continuous fluid in a discretized fashion on a computer. One method is to discretize the spatial domain into small cells to form a volume mesh or grid, and then apply a suitable algorithm to solve the equations of motion (Euler equations for inviscid, and Navier-Stokes equations for viscid flow). In addition, such a mesh can be either irregular (for instance consisting of triangles in 2D, or pyramidal solids in 3D) or regular; the distinguishing characteristic of the former is that each cell must be stored separately in memory. Lastly, if the problem is highly dynamic and occupies a wide range of scales, the grid itself can be dynamically modified in time, as in adaptive mesh refinement methods more... http://en.wikipedia.org/wiki/Computational_Fluid_Dynamics
If one chooses not to proceed with a mesh-based method, a number of alternatives exist, notably :
smoothed particle hydrodynamics, a Lagrangian method of solving fluid problems,
Spectral methods, a technique where the equations are projected onto basis functions like the spherical harmonics and Chebyshev polynomials
Lattice Boltzmann methods, which simulate an equivalent mesoscopic system on a Cartesian grid, instead of solving the macroscopic system (or the real microscopic physics).
It is possible to directly solve the Navier-Stokes equations for laminar flow cases and for turbulent flows when all of the relevant length scales can be contained on the grid (a Direct numerical simulation). In general however, the range of length scale"
Compression molding -
Compression molding : "Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, and heat and pressure are maintained until the molding material has cured. The process employs thermosetting resins in a partially cured stage, either in the form of granules, putty-like masses, or preforms. Compression molding is a high-volume, high-pressure method suitable for molding complex, high-strength fiberglass reinforcements. Advanced composite thermoplastics can also be compression molded with unidirectional tapes, woven fabrics, randomly orientated fiber mat or chopped strand. The advantage of compression molding is its ability to mold large, fairly intricate parts. Compression molding produces fewer knit lines and less fiber-length degradation than injection molding.
Retrieved from 'http://en.wikipedia.org/wiki/Compression_molding'"
Retrieved from 'http://en.wikipedia.org/wiki/Compression_molding'"
Technalysis Inc. - CAE & CFD Software - Consulting
Technalysis Inc. - CAE & CFD Software - Consulting: "CAE Expertise in Appliance, Equipment and Tools IndustryTechnalysis has been providing advanced CAE technology to the appliance industry and its suppliers.
Technalysis can fully support or compliment client engineering capabilities on problems related to flow, heat transfer, noise, vibration, stress, electromagnetic and materials processing in product design and manufacturing.
Specific experience areas includes system and component analysis and design improvement of the following equipment and its components:
Refrigerators
Dishwashers
Ovens and ranges
Vacuum cleaners
Printers
Copiers
Hand tools"
Technalysis can fully support or compliment client engineering capabilities on problems related to flow, heat transfer, noise, vibration, stress, electromagnetic and materials processing in product design and manufacturing.
Specific experience areas includes system and component analysis and design improvement of the following equipment and its components:
Refrigerators
Dishwashers
Ovens and ranges
Vacuum cleaners
Printers
Copiers
Hand tools"
CAE Software - Consulting - Electric Motors & Generators
CAE Software - Consulting - Electric Motors & Generators: "CAE Expertise in Electric Motors and GeneratorsTechnalysis has many years of experience in designing electric motors, generators & alternators Passage� Wheel / Duct and Sysflow have been further developed to support these activities and their capabilities have been proven. Combined approach of system and component analysis together with experimental measurements is an essential and powerful tool for electric motor and generator design.
The use of computer analysis to model and predict the flow and heat performance of electric motors before committing to a prototype will greatly reduce the time and cost of product development. With this capability, better engineering decisions can be made and design uncertainties reduced.
Specific experience areas includes system and component analysis and design improvement of the following equipment and its components:
Electric motors
Generators
Alternators
The use of computer analysis to model and predict the flow and heat performance of electric motors before committing to a prototype will greatly reduce the time and cost of product development. With this capability, better engineering decisions can be made and design uncertainties reduced.
Specific experience areas includes system and component analysis and design improvement of the following equipment and its components:
Electric motors
Generators
Alternators
CAE - CFD Consulting and Enginerring in Automotive and Heavy Machinery Industry
CAE - CFD Consulting and Enginerring in Automotive and Heavy Machinery Industry: "CAE Expertise and CFD Consulting in Automotive and Heavy Machinery IndustrySince 1985, Technalysis has been providing advanced CAE technology and CFD consulting to the automotive, construction, agricultural equipment companies and its suppliers.
Technalysis can fully support or compliment client engineering capabilities on problems related to flow, heat transfer, noise, vibration, stress, electromagnetic and materials processing in product design and manufacturing.
Specific experience areas includes analysis and design improvement of the following components, systems and processes:
Engine components
Cooling systems
Brakes and clutches
Turbines and compressors
Torque converters
Water pumps
Pumps and valves
Climate control
Electric motor cooling
Fan design
Underhood cooling
Exhaust systems
Emission control
Casting
Compression and injection molding
Extrusion "
Technalysis can fully support or compliment client engineering capabilities on problems related to flow, heat transfer, noise, vibration, stress, electromagnetic and materials processing in product design and manufacturing.
Specific experience areas includes analysis and design improvement of the following components, systems and processes:
Engine components
Cooling systems
Brakes and clutches
Turbines and compressors
Torque converters
Water pumps
Pumps and valves
Climate control
Electric motor cooling
Fan design
Underhood cooling
Exhaust systems
Emission control
Casting
Compression and injection molding
Extrusion "
Tuesday, April 18, 2006
Compression molding
Compression molding: "Compression molding
From Wikipedia, the free encyclopedia
Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, and heat and pressure are maintained until the molding material has cured. The process employs thermosetting resins in a partially cured stage, either in the form of granules, putty-like masses, or preforms. Compression molding is a high-volume, high-pressure method suitable for molding complex, high-strength fiberglass reinforcements. Advanced composite thermoplastics can also be compression molded with unidirectional tapes, woven fabrics, randomly orientated fiber mat or chopped strand. The advantage of compression molding is its ability to mold large, fairly intricate parts. Compression molding produces fewer knit lines and less fiber-length degradation than injection molding.
Retrieved from 'http://en.wikipedia.org/wiki/Compression_molding'"
From Wikipedia, the free encyclopedia
Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, and heat and pressure are maintained until the molding material has cured. The process employs thermosetting resins in a partially cured stage, either in the form of granules, putty-like masses, or preforms. Compression molding is a high-volume, high-pressure method suitable for molding complex, high-strength fiberglass reinforcements. Advanced composite thermoplastics can also be compression molded with unidirectional tapes, woven fabrics, randomly orientated fiber mat or chopped strand. The advantage of compression molding is its ability to mold large, fairly intricate parts. Compression molding produces fewer knit lines and less fiber-length degradation than injection molding.
Retrieved from 'http://en.wikipedia.org/wiki/Compression_molding'"
Compression Molding Software
PASSAGE®/Compression Software
· PASSAGE®/COMPRESSION Software is a finite element program for the mold filling simulation of complex three-dimensional, thin-walled parts.
· Flow models include: Barone-Caulk hydrodynamic friction and generalized Newtonian fluid to simulate the non-isothermal filling of SMC, BMC, and glass; fiber orientation for SMC and curing kinetics for thermosets.
· A high-pressure in-mold coating simulation option is also available.
· A user-friendly preprocessor allows mesh generation and capability to accept externally generated
meshes with interactive entry of process conditions and numerical control parameters.
· Results are viewed with an interactive post-processor that features dynamic rotation and zooming animation of results, and viewing options for color contour and vector plots.
· PASSAGE®/COMPRESSION Software is a finite element program for the mold filling simulation of complex three-dimensional, thin-walled parts.
· Flow models include: Barone-Caulk hydrodynamic friction and generalized Newtonian fluid to simulate the non-isothermal filling of SMC, BMC, and glass; fiber orientation for SMC and curing kinetics for thermosets.
· A high-pressure in-mold coating simulation option is also available.
· A user-friendly preprocessor allows mesh generation and capability to accept externally generated
meshes with interactive entry of process conditions and numerical control parameters.
· Results are viewed with an interactive post-processor that features dynamic rotation and zooming animation of results, and viewing options for color contour and vector plots.
Wednesday, April 12, 2006
Discrete Element Modeling - Passage DEM Software- Particle Flow Simulation
Discrete Element Modeling - Passage DEM Software- Particle Flow Simulation: "Discrete Element Method
PASSAGE/DEM is for predicting the flow particles under a wide variety of forces. Some features of Passage Discrete Element Method Software:
Equations of motion are solved for translation and rotation of individual particles traveling in electrostatic, magnetic, or gravitational fields.
The size of the particles can be in the order of microns or larger. All appropriate forces are included in the formulation.
The particles can be of different shape and size with a given distributions.
The particles can carry charge. Individual charging of particles are calculated.
Different properties of the particles such as charge, temperature, etc. can be predicted by tracking the motion of each particle.
Different types of boundary surfaces can be modeled whether they are stationary or moving.
A user-friendly pre- and post-processor is provided to input the geometry of the boundaries and the particles, as well as the display of motion and other properties of the particles.
Structural deformations of rollers, belts driving the particles are also included in the models.
Runs on PC-based Workstations.
Technalysis offers customization of PASSAGE�/DEM to meet specific customer needs.
DEM Software Licensing information"
PASSAGE/DEM is for predicting the flow particles under a wide variety of forces. Some features of Passage Discrete Element Method Software:
Equations of motion are solved for translation and rotation of individual particles traveling in electrostatic, magnetic, or gravitational fields.
The size of the particles can be in the order of microns or larger. All appropriate forces are included in the formulation.
The particles can be of different shape and size with a given distributions.
The particles can carry charge. Individual charging of particles are calculated.
Different properties of the particles such as charge, temperature, etc. can be predicted by tracking the motion of each particle.
Different types of boundary surfaces can be modeled whether they are stationary or moving.
A user-friendly pre- and post-processor is provided to input the geometry of the boundaries and the particles, as well as the display of motion and other properties of the particles.
Structural deformations of rollers, belts driving the particles are also included in the models.
Runs on PC-based Workstations.
Technalysis offers customization of PASSAGE�/DEM to meet specific customer needs.
DEM Software Licensing information"
Passage Freeze Drying Software
CAE Software - Freeze Drying Software: "PASSAGE FrezeDrying SoftwarePASSAGE/FreezeDrying is a finite-element modeling software aimed at assisting the user and designer of freeze-drying processes in improving the quality of freeze-dried products in pharmaceutical and food processes. Drying processes of various geometric models may be modeled including the effects of shelve temperature, chamber pressure, convection, and radiation in freeze-drying ovens.
A user-friendly, interactive pre-processing accepts externally generated meshes and supports automatic entry of material properties and process conditions, and display of geometry.
A user-friendly, interactive post-processing module displays the computed temperature, vapor pressure, water concentration and glass transition temperature distributions in the form of contour plots and x-y graphs.
FreezeDrying brochure "
A user-friendly, interactive pre-processing accepts externally generated meshes and supports automatic entry of material properties and process conditions, and display of geometry.
A user-friendly, interactive post-processing module displays the computed temperature, vapor pressure, water concentration and glass transition temperature distributions in the form of contour plots and x-y graphs.
FreezeDrying brochure "
Friday, April 07, 2006
Discrete element method - Wikipedia, the free encyclopedia
Discrete element method - Wikipedia, the free encyclopedia: "Applications
The fundamental assumption of the method is that the material consists of separate, discrete particles. These particles may have different shapes and properties. Some examples are:
liquids and solutions, for instance of sugar or proteins;
bulk materials in storage silos, like cereal;
granular matter, like sand;
powders, like toner.
Typical industries using DEM are:
Mining
Pharmaceutical
Oil and gas
Agriculture and food handling
Chemical "
The fundamental assumption of the method is that the material consists of separate, discrete particles. These particles may have different shapes and properties. Some examples are:
liquids and solutions, for instance of sugar or proteins;
bulk materials in storage silos, like cereal;
granular matter, like sand;
powders, like toner.
Typical industries using DEM are:
Mining
Pharmaceutical
Oil and gas
Agriculture and food handling
Chemical "
Numerical analysis - Wikipedia, the free encyclopedia
Numerical analysis - Wikipedia, the free encyclopedia: "Numerical analysis
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Numerical analysis is the study of algorithms for the problems of continuous mathematics (as distinguished from discrete mathematics). Some of the problems it deals with arise directly from the study of calculus; other areas of interest are real variable or complex variable questions, numerical linear algebra over the real or complex fields, the solution of differential equations, and other related problems arising in the physical sciences and engineering."
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Numerical analysis is the study of algorithms for the problems of continuous mathematics (as distinguished from discrete mathematics). Some of the problems it deals with arise directly from the study of calculus; other areas of interest are real variable or complex variable questions, numerical linear algebra over the real or complex fields, the solution of differential equations, and other related problems arising in the physical sciences and engineering."
Discrete element method - Wikipedia, the free encyclopedia
Discrete element method - Wikipedia, the free encyclopedia: "Outline of the method
A DEM-simulation is started by putting all particles in a certain position and giving them an initial velocity. Then the forces which act on each particle are computed from the initial data and the relevant physical laws.
The following forces may have to be considered in macroscopic simulations:
friction, when two particles touch each other;
recoil, when two particles collide;
gravity (the force of attraction between particles due to their mass), which is only relevant in astronomical simulations.
On a molecular level, we may consider
the Coulomb force, the electrostatic attraction or repulsion of particles carrying electric charge;
Pauli repulsion, when two atoms approach each other closely;
van der Waals force.
All these forces are added up to find the total force acting on each particle. An integration method is employed to compute the change in the position and the velocity of each particle during a certain time step from Newton's laws of motion. Then, the new positions are used to compute the forces during the next step, and this loop is repeated until the simulation ends.
Typical integration methods used in a discrete element method are:
the Verlet algorithm,
velocity Verlet,
the leapfrog method"
A DEM-simulation is started by putting all particles in a certain position and giving them an initial velocity. Then the forces which act on each particle are computed from the initial data and the relevant physical laws.
The following forces may have to be considered in macroscopic simulations:
friction, when two particles touch each other;
recoil, when two particles collide;
gravity (the force of attraction between particles due to their mass), which is only relevant in astronomical simulations.
On a molecular level, we may consider
the Coulomb force, the electrostatic attraction or repulsion of particles carrying electric charge;
Pauli repulsion, when two atoms approach each other closely;
van der Waals force.
All these forces are added up to find the total force acting on each particle. An integration method is employed to compute the change in the position and the velocity of each particle during a certain time step from Newton's laws of motion. Then, the new positions are used to compute the forces during the next step, and this loop is repeated until the simulation ends.
Typical integration methods used in a discrete element method are:
the Verlet algorithm,
velocity Verlet,
the leapfrog method"
CAE Software - Freeze Drying Software
CAE Software - Freeze Drying Software:
PASSAGE FrezeDrying Software is a finite-element modeling software aimed at assisting the user and designer of freeze-drying processes in improving the quality of freeze-dried products in pharmaceutical and food processes. Both axisymmetric models of vials and planar two-dimensional cross-sectional models of pan drying processes may be modeled including the effects of shelve temperature, chamber pressure, convection, and radiation in freeze-drying ovens.
A user-friendly, interactive preprocessing module with a built-in 3-D CAD capability supports automatic entry of material properties and process conditions, mesh generation, and display of geometry.
A user-friendly, interactive postprocessing module displays the computed temperature, vapor pressure, and water concentration distributions in the form of contour"
PASSAGE FrezeDrying Software is a finite-element modeling software aimed at assisting the user and designer of freeze-drying processes in improving the quality of freeze-dried products in pharmaceutical and food processes. Both axisymmetric models of vials and planar two-dimensional cross-sectional models of pan drying processes may be modeled including the effects of shelve temperature, chamber pressure, convection, and radiation in freeze-drying ovens.
A user-friendly, interactive preprocessing module with a built-in 3-D CAD capability supports automatic entry of material properties and process conditions, mesh generation, and display of geometry.
A user-friendly, interactive postprocessing module displays the computed temperature, vapor pressure, and water concentration distributions in the form of contour"
Engineering Software
Advantage of Technalysis' System and Component Level Analysis Approach
Entire system can be easily and quickly modeled and modified using Passage 1D Sysflow Software.
The models can be created early in the design cycle to detect potential problems.
A sensitivity analysis can be performed to determine the critical parameters and improve system level performance.
Passage Flow can be used to do further 3D analysis to improve specific component performance, understand and visualize complex flow behavior and solve any flow and heat transfer problems.
Entire system can be easily and quickly modeled and modified using Passage 1D Sysflow Software.
The models can be created early in the design cycle to detect potential problems.
A sensitivity analysis can be performed to determine the critical parameters and improve system level performance.
Passage Flow can be used to do further 3D analysis to improve specific component performance, understand and visualize complex flow behavior and solve any flow and heat transfer problems.
Thursday, April 06, 2006
Passage Compression Software
Benefits of Passage/ Compression Software
Modeling thin walled geometries
Hele, Shaw or Barone , Caulk model for flow
Filling and heat transfer coupled
Post-fill curing
Fiber orientations
Modeling thin walled geometries
Hele, Shaw or Barone , Caulk model for flow
Filling and heat transfer coupled
Post-fill curing
Fiber orientations
CAE Software - Compression Software
PASSAGE/COMPRESSION Software is a finite element program for the mold filling simulation of complex three-dimensional, thin-walled parts.
Flow models include: Barone-Caulk hydrodynamic friction and generalized Newtonian fluid to simulate the non-isothermal filling of SMC, BMC, and glass; fiber orientation for SMC and curing kinetics for thermosets.
A high-pressure in-mold coating simulation option is also available.
A user-friendly preprocessor allows mesh generation and capability to accept externally generated
meshes with interactive entry of process conditions and numerical control parameters.
Results are viewed with an interactive post-processor that features dynamic rotation and zooming animation of results, and viewing options for color contour and vector plots."
Flow models include: Barone-Caulk hydrodynamic friction and generalized Newtonian fluid to simulate the non-isothermal filling of SMC, BMC, and glass; fiber orientation for SMC and curing kinetics for thermosets.
A high-pressure in-mold coating simulation option is also available.
A user-friendly preprocessor allows mesh generation and capability to accept externally generated
meshes with interactive entry of process conditions and numerical control parameters.
Results are viewed with an interactive post-processor that features dynamic rotation and zooming animation of results, and viewing options for color contour and vector plots."
Tuesday, April 04, 2006
Passage / Flow Software
CFD Flow Modeling Software - CAE - Flow Simulation:
PASSAGE/FLOW Software is a general purpose software for three-dimensional flow and heat transfer analysis.
PASSAGE/FLOW program can minimize the cost and time of traditional prototype building and testing, thus shortening product design cycles
Designs can be analyzed and modified many times to evaluate flow losses on the computer before expensive and time consuming design decisions are finalized.
Technalysis offers customization services whereby PASSAGE /Flow can be integrated with other programs to fit unique customer specifications.
Licensing information
PASSAGE/FLOW Software is a general purpose software for three-dimensional flow and heat transfer analysis.
PASSAGE/FLOW program can minimize the cost and time of traditional prototype building and testing, thus shortening product design cycles
Designs can be analyzed and modified many times to evaluate flow losses on the computer before expensive and time consuming design decisions are finalized.
Technalysis offers customization services whereby PASSAGE /Flow can be integrated with other programs to fit unique customer specifications.
Licensing information
CFD Flow Modeling Software
CFD Flow Modeling Software - CAE - Flow Simulation:
Benefits of 3D Flow Software3D analysis for CFD flow modeling and heat transfer
Understand and visualize complex flow behavior
Improve component performance
Reduced solution time
Powerful component design tool when combined with 1D system analysis program
Benefits of 3D Flow Software3D analysis for CFD flow modeling and heat transfer
Understand and visualize complex flow behavior
Improve component performance
Reduced solution time
Powerful component design tool when combined with 1D system analysis program
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