METHOD OF CALCULATING THE WIND TUNNEL INTERFERENCE FOR STEADY AND OSCILLATING WINGS IN TUNNELS OF ARBITRARY WALL CONFIGURATION
Final rept. Jun-Dec 1967
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN
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A method of calculating the wind tunnel interference induced by arbitrary wall configurations has been developed wherein a linearized equation of the perturbation velocity potential is used to describe the flow in the tunnel. A series solution of the interference velocity potential satisfies the differential equation exactly. The constant coefficients in the series solution are determined by the point matching technique along the boundary. Results are presented for slotted tunnel walls with homogeneous boundary conditions. Solutions presented show excellent agreement with the results obtained by other methods for a stationary as well as an oscillating wing. Finally, the method is applied to compute a set of zero interference configurations for a combination of slot openings of side walls, roof, and floor.
- Fluid Mechanics