TWO-DIMENSIONAL WIND-TUNNEL WALL INTERFERENCE

Two-dimensional wind-tunnel wall interference is important in the testing of airfoils particularly at transonic speeds. The complex flow features at the ventilated test section boundaries introduce uncertainties in the boundary conditions. Therefore, modern wall interference calculation methods, in lieu of the classical boundary conditions, use experimentally measured values of the pressure and/or flow inclination at the wall to correct the test data. A comprehensive review is given of different methods to calculate two-dimensional wall interference. Most of the methods are based on subsonic flow theory and still give useful results in the low transonic regime as long as the flow is sub-critical at the walls. Methods developed by Murman and Kemp employ transonic analysis. Kemp's method, based on the solution of the transonic small-disturbance equation, represents the state-of-the-art in transonic wall interference calculations. The method is useful as a benchmark for validating other simpler methods.

• Supplemental Notes:
  • J Aircraft, v 27 n 11, Nov 1990, p 975 [2 p, 6 ref, 2 fig]
• Authors:
  • Murthy, A V
  • Wedemeyer, E
• Publication Date: 1990

Language

• English

Subject/Index Terms

• TRT Terms: Interference; Wall effect; Wind tunnels
• Uncontrolled Terms: Two dimensional
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00700187
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM