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CFX was able to model both centerline velocity vectors and train surface pressures even though the geometry of the wind tunnel and train came from separate sources.
Application: CFX Aids Development of Wind Tunnel
Posted Mon September 30, 2002 @05:13AM
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Application Information from Trevor Bender, Aiolos Engineering

Aiolos Engineering saved time and costs in the development of a 100-meter long wind tunnel by using CFX computational fluid dynamics (CFD) software instead of physical testing. Building and testing a scale model was ruled out because it was expensive and required more time than was allotted for the design of the entire facility. By creating a CFD model of the wind tunnel, Aiolos was able to evaluate many design parameters in a fraction of the time required to design and build a model wind tunnel and to implement a test program. Engineers used CFD to evaluate different wall divergence angles and roughness conditions of the test section to meet a key design challenge: to achieve a reasonable trade-off between the axial static pressure and velocity gradients over the full range of train shapes and sizes. "Ideally, both the static pressure and velocity should be constant along the entire length of the test vehicle," says Trevor Bender, aerodynamicist at Aiolos Engineering. "With CFD, we could perform many trade-off studies to find the optimal balance between those two factors."

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