Wall interference in a perforated wind tunnel


The interference of perforated walls on sources and doublets is treated by showing that as the dimensions of a cascade wall become small, the cascade wall approximates a vortex sheet. Special singularities called "reflected" and "transmitted" are developed to simulate the interference of the vortex sheet on the original singularities. Equations are given for the interference of two preforated walls on the flow fields of two-dimensional sources and doublets.

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