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Computational Fluid Dynamics


What is CFD?
Computational Fluid Dynamics (CFD) refers to the numerical solution of the partial differential equations governing fluid flow (in this case, the Reynolds-averaged Navier-Stokes equations). With modern computing resources, CFD is frequently used today to obtain accurate predictions of flows over, or through, complex configurations (see C6.R wireframe right for example geometry). Generation of a suitable grid from the geometry can take weeks in some instances. The Pontiac GTO (right) shows an example grid in addition to a CFD pressure prediction. From the generated grid, it is possible to solve for pressure and flow (see C6.R pressure/flow right). The solutions are then used to interpret the results and make recommendations.


Corvid’s Advantage
Corvid personnel use and develop tools to improve the entire CFD analysis process, from problem setup to interpretation of results. These tools include:

  • The ANSYS ICEM CFD package for unstructured grid generation
  • Established processes to generate high-quality grids rapidly (0.5 days to 1 week) on complex configurations
  • In-house-developed tools to improve overall grid quality and increase local grid refinement
  • The RavenCFD flow solver, developed at Corvid
  • In-house-developed post-processing tools to simplify the analysis of large 3D datasets
  • FIELDVIEW for dataset visualization
Corvette C6.R wireframe model used to generate CFD grid


Pontiac GTO CFD grid at left; pressure prediction from RavenCFD on right.


Corvette C6.R pressure and flow prediction.
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Client Examples
Automotive applications:
· Drafting studies
· Design and analyze aerodynamic improvements, e.g.:
    - Drag reduction
    - Downforce increase
    - Downforce distribution optimization
· Support testing with pre-test predictions
· Ride height studies
· Radiator flow optimization
· Brake cooling flow studies

 Defense applications:
· Blast dynamics
· Store separation
· Low- to high-speed flows over missiles and aircraft
· Fluidic valve system analysis
· Missile launcher system flow studies
· Propulsion systems

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