CFD-FASTRAN is the leading commercial CFD software for aerodynamic and aerothermodynamic applications. It is specifically designed to support the aerospace industry. It employs state-of-the-art multiple moving body capability for simulating most complex aerospace problems including missile launch, maneuvering and staging, and aircraft flight dynamics and store separation. These challenging applications are enabled by coupling a density based compressible Euler and Navier-Stokes flow solver with moving multi-body dynamics, generalized finite rate chemistry and thermal non-equilibrium modules.
CFD-FASTRAN employs state-of-the-art numerical and physical models, and advanced pre- and post-processing modules. It supports all grid technologies including multi-block structured, general polyhedral unstructured, Chimera/overset and adaptive Cartesian. It supports most of the commonly used data formats. Furthermore, CFD-FASTRAN works on all computer hardware/software systems. It is designed for parallel computing on high performance workstations and PC clusters.
CFD-FASTRAN is a density-based finite-volume solver for compressible flows. The solver incorporates higher-order numerical schemes and advanced physical models to provide accurate and efficient solutions to complex engineering flow problems. The salient features and capabilities of CFD-FASTRAN include the following:
Grid Types
Multi-Block Structured Grids
Overset Structured Grids
General Unstructured Grids (with arbitrary combination of cell types including hexahedra, tetrahedra, Cartesian, prism and polyhedral)
Problem Types
Euler, laminar and turbulent solvers
2D, Axi-symmetric and 3D
Steady state and unsteady
Subsonic, transonic, supersonic and hypersonic flows
Numerical Methods
Density based finite volume formulation
Roe and Van-Leer upwinding flux functions
Second and third order accurate schemes using the MUSCL approach with Min-Mod, Osher-Chakravarthy and Van Leer limiters
Multi-stage explicit Runge-Kutta, Point implicit and fully implicit time integration schemes
Turbulence Models
High Reynolds number k-e turbulence model (with wall functions)
Low Reynolds number k-w turbulence model*
Balwin-Lomax turbulence model
Spalart-Allmaras turbulence model
Menter Shear Stress Transport (SST) turbulence model*
* These models are only available for structured meshes
Chemistry Models
General Finite Rate reactions with arbitrary number of species and reactions
Multiple energy modes that include thermal equilibrium and two-temperature thermal non-equilibrium
Two databases for thermodynamics, including a curve fit database for 300K to 6000K, and a spectroscopic database for thermal non-equilibrium
A surface chemistry model that allows fully-catalytic or sticking coefficient options
Moving Body Capabilities
Automated Chimera algorithm to handle relative movement of grid systems
Aerodynamically coupled six-degree-of-freedom (6-DOF) rigid body dynamics module, which supports general constraints and model dependencies
Prescribed motion model
Thrust and ignition module for prescribing time dependent boundary conditions
Output & Postprocessing
Dimensional or Non-dimensional forces, moments, accelerations, velocities and body location/orientation, in user specified, body-axis or inertial axis system
Full field solution variables including velocitiy, pressure, temperature, density and Mach number. Other variable such as turbulence and species concentration are also printed, if applicable
Time history of body kinematics including linear and angular displacements, linear and angular velocities and linear and angular accelerations
Plot3d and DTF formats
Input & Problem Set-Up
Specified using intuitive and easy-to-use Graphical User Interface (GUI)
Accepts PEGASUS hole cutting and chimera input
Integrated with MDICE for interfacing with other CAD and CFD packages
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