CFdesign For Catia

Simulation Set-up Features:

Modeling

• MCAD geometry is read directly into CFdesign
• Large assembly, part, and 2D surface model capability
• Support for MCAD native analysis features
• MCAD mouse navigation is the same inside CFdesign
• Spaceball navigation
• Automatic flow volume creation
• Interactive diagnostics for geometric problem identification

Geometric Associativity

• Preservation of all CFdesign parameters when geometry is optimized in the MCAD environment
• Automatic settings transfer between analyses in a project
• Persistent part names from MCAD tool
• Automatic selection of many parts using partial or full MCAD part names

User Interface

• Full Windows support for list selection tools
• User-customizable preferences for interface layout and environment set-up
• User-customizable default units for output quantities
• User-defined rules to automate assignment of settings based on attributes from the MCAD model
• Embedded user Notes section for recording information about an analysis
• Build-in Print utility
• Interactive feature tree listing loads, mesh sizes, materials, and providing appearance control of individual parts and materials
• Graphical assignment of materials to parts on native MCAD model
• Graphical assignment of flow direction for internal fans on native MCAD model
• Graphical assignment of rotation direction to rotating components on native MCAD model
• Graphical preview of assigned motion on native MCAD model
• Normal to arbitrary surface velocity specification
• Associative selection for model entities in loads and mesh size specification tasks
• Intuitive and consistent specification of loads, mesh sizes, and materials
• Arbitrary units selection for all materials
• Fully customizable Material database
• Automatic entity groups for automatic selection / visualization of any common items

Automatic Meshing

• Automatic Mesh Sizing based on Geometry topology and feature proximity
• Geometry Diagnostics for problem identification
• Automatic and extremely robust fast tetrahedral meshing
• Mesh Preview mode prior to starting calculation
• Mesh Size Estimator
• Element healing algorithm to automatically account for very small features
• Mesh size application on volumes, surfaces, and edges
• Automatic curve mesh sizing with biasing
• Automatic mesh refinement for capturing true wall effects
• Automatic part-by-part meshing for large assemblies on common desktops
• Extrusion meshing with automatic non-formal interface

Analysis Features:

Engineering Conditions

• All pertinent flow boundary conditions
• All pertinent heat transfer boundary conditions
• Transient boundary condition application
• Arbitrary units selection for all boundary conditions
• Graphical MCAD model-based boundary condition application
• Cartesian and true axisymmetric coordinate systems
• Surface part capability for very thin sheetmetal, adhesive layers, or baffles
• Local or system wall roughness
• Mass, volumetric, or pressure driven flow conditions
• Mid-Analysis re-initialization of field variables
• Current and / or voltage driven Joule Heating analysis
• Periodic boundary conditions
• Rotating component capability
• Flow-driven solid motion capability
• User Defined solid motion capability
• Radiative heat transfer through transparent media
• User-defined heat source thermostat location

Flow Regimes

• Laminar and turbulent flow regimes with automatic transition
• Internal and external flows
• Incompressible flow
• Subsonic, Transonic, and Supersonic Compressible
• Steady State and Transient flow phenomena

Turbulence Models

• k-epsilon
• RNG
• Constant eddy-viscosity
• Low Reynolds Number
• Mixing Length
• Wall Functions in k-epsilon and RNG
• Laminar

Heat Transfer

• Conjugate heat transfer (simultaneous conduction and convection)
• Conduction
• Convection
  • Natural
  • Mixed
  • Forced
• Internal surface to surface radiation
  • Radiative exchange through transparent media
  • Full reciprocity enforced
  • Geometry symmetry supported
  • Objects in motion
• Automatic film coefficient calculation
• Boundary conditions:
  • Temperature
  • Convection
  • Total and area-based heat flux
  • Radiation
  • Total and volumetric heat source
• Joule (electrical resistance) heating
• Temperature dependent heat generation
• Thermostatically-controlled internal fan and blower materials
• Temperature dependent emissivity
• Thin component heat loading or specific J-theta conductivity
• Compact Thermal Model for electronic component analysis
• Forced Convection Automation
• Solar Loading model

Property Variations

• Property database for common engineering fluids and solids in all units conventions
• Unlimited number of different properties in one analysis
• Variable fluid and solid properties
• Multiple fluid capability
• User-modifiable fluid and solid property data bases
• Solidification-like properties
• Property variations with user-selected independent variable
• User-defined look-up tables for functional form of properties
• Non-Newtonian power law, Carreau, and Hershel Buckley non-Newtonian formulations

Additional Physical Models

• Cartesian and axisymmetric coordinate systems
• Multiple Rotating Frame of reference
• Solid object motion:
  • Linear
  • Angular
  • Combined linear/angular
  • Sliding Vane
  • Orbital
  • Nutating
  • Free (Unconstrained) with collision detection
• Linear and angular solid object motion
• Two-phase flows (humid gas and steam/water mixtures)
• Scalar Transport equation
  • Property variation with scalar concentration
  • Simulate mixing of multiple fluids
  • Modifiable diffusion coefficient
• Surface Parts
  • Solid Obstructions
  • Thermal Contact Resistance
  • Distributed Resistance regions
• Distributed Resistance and Porous Media elements
• Simulation of pressure loss elements by specifying a free area ratio
• Specification of Pressure-Flow Rate loss curve
• Internal fans with fan/pump head-capacity curve
• Internal fan velocity profile specification
• Check Valve condition
• Fan/Pump head-capacity curve boundary condition
• Centrifugal blower model with head-capacity curve
• General Cartesian and cylindrical distributed resistance
• Compact Thermal Model for electronic component simulation
• Printed Circuit Board Characterizer
• Solar Loading model

Visualization Features

• Shaded, transparent, and wireframe display modes
• Units conversion of displayed results
• Probe on any part surface, curved or flat
• Multiple Particle traces
  • Manual seed point selection on cutting plane
  • Rectangular grid seed point selection
  • Circular grid seed point selection
• Residence time display for particle traces
• Deletion of individual particle traces
• Mass-weighted particle traces with modifiable coefficient of restitution
• Animation of particle traces
• Cutting planes at any location
• Vector, contour, and mesh display on cutting planes
• Probe at any location on a cutting plane
• Cutting plane orientation set on Cartesian planes, user-input orientation, or based on any planar surface in the model
• Cutting plane with model clipping capability
• Multiple cutting planes, each capable of displaying different results
• Non-planar cutting surfaces
  • MCAD surface as surface shape
  • Morphing from MCAD source to target surfaces
  • Growth and shape transition based source surface offset
• Cutting edge display for two dimensional models
• XY plotting at any location
• XY Plotting (using points selected from cutting planes)
• XY Plotting and bulk output for transient time step results
• Multi-analysis XY plotting capability
• Graphical and quantitative output of XY plot data
• Multiple XY plot data sets
• Interactive Z-clip into model
• Crinkle cut view of internal mesh display
• Interactive center-of-rotation specification
• Fully interactive vector spacing
• Iso Surfaces display (should be before vector display on iso surfaces…)
• Vector display on iso surfaces
• Multiple iso surface sets
• Iso surfaces colored by a quantity different than the iso quantity
• Display mode control for each part (including color and transparency level)
• Animation of multiple results sets (steady state or transient)
• Design Review Center: Automatic transfer of results entities and visualization attributes across multiple analyses
• Automatic transfer of results entities and visualization set-up across multiple analyses
• Support for multiple results entities
• Multi-analysis bulk results output
• Interactive feature tree listing results, parts, iso surfaces, and cutting planes
• Dynamic Image output with support of multiple results set and particle trace animation that can be used in Internet Explorer, Word, or PowerPoint
• Complete record of all analysis set-up parameters in results mode
• Instant results viewing of any saved results set/time step
• Automatic analysis or project report creation based on standard or company-specific templates
• Interactive bulk data on any plane
• Bulk data on multiple regions
• Interactive wall force, convection, and heat flux results on user-selected walls
• Automatic Component Thermal Summary
• Cutting plane output table
• Automatic transient hydraulic torque table for rotating components
• Automatic transient force, angular displacement, velocity, and torque tables for moving components
• Volume and surface blanking
• Part mirroring
• Zoom to File function

Other Unique Features of CFdesign

• Mathematical Formulation
  • Finite element formulation
• Intelligent Algorithms
  • Automatic Turbulent Startup Algorithm
  • Boundary Mesh Enhancement
  • Boundary Mesh Adaptation
  • Automatic Wall specification
  • Automatic results interpolation to new mesh
  • Intelligent Solution Control
  • Automatic Convergence Assessment
• Remote analysis solution
• Run-Time Results visualization
• Interactive Graphical Convergence Assessment
• Point convergence monitoring at any location in the model
• Full restart capability with on-the-fly results interpolation to new mesh
• Results conversion to FEA loads for use with ABAQUS, ANSYS, Mechanica, and Nastran
• Accepts mesh data files in Ideas Universal and Nastran formats
• Mesh data output in Ideas Universal format
• Client-Server architecture between interface and solver
• Fast Track: Remote solution over networked computers
• Design Review Server: remote processing of results visualization for display on local machine
• Automatic analysis batch processing

Overview | Key Features | Benefits | Full Details | Demos | FAQs