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TO BETTER UNDERSTAND the myriad of fluid and heating dynamics in their race cars, engineers at Richard Childress Racing of Welcome, N.C., turned to computers. And they wanted to see fluid flow virtually-that is, represented in a computerized component.

The team recently brought computational fluid dynamics software on board to help do just that. Engineers used the CFD software in order to improve the design of the fuel eel very system that is used to refuel cars during pit stops.

For CFD simulation, the company uses Cfdesign from Blue Ridge Numerics of Charlottesville, Va. David Holden, team engineer at Richard Childress Racing, said that his engineers design a prototype using computer aided design software from PTC of Needham, Mass.

The company now uses the simulation software to understand the fluid flow and heat transfer performance of automotive components and systems that are built in Pro/Engineer Wildfire.

"We build prototypes, hit a button, and instantly we're ready for a CFD simulation that delivers fast results on a workstation PC," Holden said.

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