CFD2000de Adaptive Research
CFD2000 es un avanzado sistema de dinámica de fluídos computacional (CFD), de propósito general, que permite la simulación de un amplio rango de problemas sobre flujo de fluídos y transferencia de calor y masa.
CFD2000 is an advanced, generalpurpose computational fluid dynamics (CFD)
software system for simulating a wide range of fluid flow and heat and mass
transfer problems including:
 Subsonic, transonic, and supersonic
 Chemical reaction
 Chemical vapor deposition
 Multiphase flow
 Turbulence modeling
 Compressible / incompressible
 Conjugate heat transfer
 Radiation
 Free surface
 FluidStructure interaction
 Fire simulations
The CFD2000 system is exceptionally easy to learn/use, and can be quickly
mastered by scientists and engineers. CFD2000 is accessed with a stateoftheart
Graphical User Interface (GUI) which provides full control of all the program?s
functions. The GUI menu structure represents a logical progression through the
process of fluid flow simulation that is intuitive for experienced CFD
investigators and a convenient guide for beginners.
Based on an advanced 3D windowing scheme, CFD2000?s intelligent GUI guides
you through all steps of a flow simulation. Using pulldown menus and a
combination of mouse and keyboard inputs, you can define the flow model, control
and monitor the progress of the analysis, and examine the results. The software
provides intelligent default values and performs extensive error checking on
inputs.
Features
General
 Fully interactive menudriven input
 Multiple window environment
 Meshindependent geometry
 Automatic mesh generation
 Pointandclick boundary condition specification
 Units conversion
 Flow field initialization tools
 Automatic timestepping
 Mesh sequencing
 Realtime solution convergence monitoring
 Prompt line help
 Error diagnostics
 File management
Geometry Model Definition
 Coordinate systems, all with 1, 2, or 3dimensions
 Cartesian coordinates
 Cylindrical coordinates (including 2Daxisymmetric)
 Bodyfitted coordinates (BFC)
 Geometrybased modeling with separate specification for each region of
 Physical extent
 Number of computational elements (cells)
 Mesh stretching (powerlaw for Cartesian and cylindrical, hyperbolic for
BFC)
 Moving mesh capability
 CAD data import (IGES)
Analysis Options
 Steadystate or transient
 Incompressible lowspeed or compressible transonic/supersonic flow
 Laminar or turbulent flow
 Flow through porous media
 Twophase (particle/continuum) flow  Lagrangian particle tracking with
models for
 Particle breakup
 Particle merging
 Particle evaporation/ablation with latent heat exchange
 FreeSurface
 Chemicallyreacting flow with fast chemical options
 Instantaneous
 Equilibrium
 Frozen
 Finite rate  multistep
 Surface
 Chemical vapor deposition (CVD)
 Heat transfer
 Conjugate (fluid/solid) heat transfer
 Radiation (view factor method in BFC)
 Rigid body fluidstructure interaction (FSI)
 Userdefined variables (chemical species/passive tracer concentrations)
 Full dependent variable control (store/save/print/omit options)
Fluid/Solid Property Control
Values drawn from builtin library, userdefined models, or specified as
constants
 Density (equation of state)
 Laminar viscosity, including three nonNewtonian extensions
 Powerlaw model
 Carreau model
 Bingham model
 Turbulent viscosity (kepsilon model default)
 Specific heat
 Thermal conductivity
 Reference temperature and thermal expansion coefficient
 Mass diffusivities
Boundary Conditions
 Boundary conditions aligned to geometric regions or cells (independent
of computational mesh)
 Usersupplied or modelgenerated name for each boundary
 "Pointandclick" boundary specification for
 Inlets, with velocities specified in terms of Cartesian coord
 Outlets, with external dependent variables
 Walls, with assigned fluxes/values for solved dependent var
 Volumetric blockages, with dependent variable flux/value assigned to each
surface
 General source quantities specified per unit volume, unit area, or per
cell
 Porous flow regions, with userspecifed permeability and nonlinear loss
coefficient
 Moving grid, with motion specified in terms of constant or timedependent
velocities
 Gravity forces and other body forces, with force vector for each relevant
axis
 Cyclic boundaries in three orthogonal coordinate directions
 Boussinesq approximation available for buoyant convection
 Particle injection available at any boundary
Solution Control
 Initial values of all solved dependent variables can be set for the
entire domain or for domain subsets
 Restart capability for all solved dependent variables
 Automatic or specified time step control
 Separate time step multipliers for all transient variables
 Grid sequencing for automatic increase/decrease in grid resolution
 Choice of linear equation solvers for each dependent variable
 Alternatingdirection implicit (ADI)
 Direct solver
 Incomplete factorization
 User control over number of iterations, relaxation factor, and
convergence criteria
 Four convection schemes available for each dependent variable
 1storder upwind
 2ndorder upwind
 3rdorder upwind
 Hybrid
 Two treatments available for diffusivity of each dependent variable
 Arithmetic averaging
 Harmonic averaging
 Toggle on/off compressibility and pressure work terms
 Run time solution monitoring
 Postprocessing visualization output options
 Fieldview
 Tecplot
 Plot3D
