FAQ 004805 | How is the C-p coefficient of the surface result determined in RWIND Simulation?

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Question

How is the Cp coefficient of the surface result determined in RWIND Simulation?

Answer

The surface Cp coefficient result scales the determined wind pressures with the dynamic pressure q(H) of the undisturbed wind flow at the top edge of the model.



The Cp coefficients or wind pressure coefficients are determined individually at each location of the surface. The positive values correspond to a compressive load and the negative values correspond to a suction load away from the surface.

cp=pq(H)


The wind pressure from the undisturbed flow is determined by using the wind profile at the wind tunnel inlet at height H. The height H is determined automatically by using the highest available model edge.

Wind velocity pressure

q=12·ρ·v2

ρ air density
v Wind velocity

Keywords

Dlubal FAQ Wind pressure Wind suction External pressure coefficient Pressure distribution Aerodynamic coefficient Frequently Asked Question FAQ about Dlubal Question and Answer about Dlubal

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  • Updated 11/20/2020

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