Universal Three-Dimensional Wall Pressure Correction Method for Closed Rectangular Subsonic Wind Tunnel Test Sections (Displacement, Downwash, Stream Line Curvature)

摘要

A wall pressure correction method for closed rectangular subsonic test sections is presented. It corrects displacement, downwash and streamline curvature for models of arbitrary size, shape, position, and bulkiness respectively. Nevertheless the number of the necessary wall pressure measurement points is kept low, so he measurement duration time must not be enlarged with respect to the correction procedure. This is achieved by choice of special wall pressure places. The method can be extended to any cross section shapes of the test section. An experimental examination of the method gave good results as well for high lift measurements as especially for blickage correction in presence of large wake region behind the model.