RESIDUAL INTERFERENCE AND WIND-TUNNEL WALL ADAPTATION

This paper reviews a linear theory of residual interference in adaptive wall wind tunnels. One-variable, two-variable, and interface discontinuity methods are analyzed. Their autocorrective properties and connections with some well-known adaptation criteria, such as the single-step convergence formulas and the functional relationships for unconfined flow, are discussed. A simple procedure for the evaluation of residual interference by the two-variable method in a two-dimensional test section is described and applied to the NASA Langley Transonic Cryogenic Wind Tunnel and the ONERA/CERT T2 adaptive wall wind-tunnel data. © 1990 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.