Abstract
Wall interference corrections are evaluated from experimental wind tunnel wall pressure distributions using the Fourier solution for the Dirichlet problem in a rectangle. The series coefficients are computed by the fast Fourier transform, making the method very efficient and suitable as a practical wall correction procedure for two-dimensional wind tunnel data. The method is applicable to arbitrary subcritical wind tunnel walls and the knowledge of their cross-flow properties is not required. A practical example is given for the BGK 1 airfoil, tested at supercritical flow conditions in the 20% perforated wall test section of the NAE high Reynolds number wind tunnel.
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