PowerFLOW is a CFD code that fits into real world development schedules

Simulation Capabilities

*Visualization of PowerFLOW grid shows areas of increasing resolution (as defined by users) around specific areas of interest. Image courtesy of Audi Sport.*

State-of-the-art Very Large Eddy Simulation (VLES) turbulence model in which turbulence length scales are calculated dynamically according to the local flow properties using a multi-equation turbulence model
Underlying lattice-based method permits shear stress to be computed using local information at each grid point, enhancing scalability and performance
A log law-of-the-wall function that enforces local shear stress and accounts for pressure gradient effects

*PowerFLOW simulation of mirror wake and A-pillar region can be used for aeroacoustic wind noise/passenger comfort studies.*

PowerFLOW comes with ready-to-use templates for automating preparation of aerodynamics simulations.
Import geometry, assign it to groups describing how it will be used, and go.
Default template uses Exa Best Practices. Users can also customize templates for their own company best practices.
Static and moving ground plane modeling is provided to more accurately reflect real driving conditions.
The template includes includes:
- Boundary layer suction point to match experimental wind tunnels
- Specification of a known experimental boundary layer inlet profile

PowerFLOW uses an enhanced Lattice Boltzmann-based method in which particle distributions exist at discrete locations in space and move in discrete directions, speeds and intervals of time
This method fully recovers the Navier-Stokes continuum fluid equations which describe macroscopic fluid properties
Explicit and fully time-dependent

Boundary conditions include:

Wall using a pressure-gradient sensitized function for turbulent flows
No-slip wall, a zero-velocity boundary condition used in low Reynolds number direct simulations
Static and total pressure boundary conditions
Velocity and mass flux boundary conditions
Pressure and velocity at one boundary
Rotating and sliding wall boundary conditions
Fixed Temperature walls
Heat flux walls
Time- and spatially-varying boundary conditions
Symmetry planes

Preparing a PowerFLOW simulation is a simple process using PowerCASE:

Import geometry as facetized surfaces in STL, MSC.Patran™ or MSC.Nastran™ format.
Customize regions of higher resolution and measurement
Specify characteristic properties and flow parameters

PowerFLOW automatically creates and uses an underlying cubic grid composed of voxels
Surface facet intersections with voxels (surfels) are calculated automatically for accurate representation of the true surface