Experimental Verification That at Mach One Wind Tunnel Wall Interference Decreases With Model Thickness.
Abstract
In an earlier analytical investigation it had been hypothesized that at Mach one thick models experience less wind tunnel wall interference than thin ones. This experimental study, performed with a water table having adjustable porosity sidewalls, utilizes the hydraulic analogy to verify the hypothesis. The pressure distribution on three affinely similar models, each having the same chord but with different thicknesses, was measured at several different settings of wall porosity. The hypothesis was verified in two ways: First, by comparing the pressure coefficient distribution for the three models at different wall porosities, second, by comparing the fluctuation of the normalized pressure coefficient for wall porosity at many chordwise stations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA013804
Entities
People
- August F. Lehman
- Theodore R. Goodman