THE WIND TUNNEL'S GROUND PLANE BOUNDARY LAYER--IT'S INTERFERENCE WITH THE FLOW UNDERNEATH CARS
In order to determine the best way to simulate a road in the full-scale climatic wind tunnel of the Volkswagenwerk AG, a series of comparative tests between road and tunnel have been carried out. In general, a good correlation was achieved when a rigid ground plane was used for road simulation. Only a small margin for improvement by boundary-layer control remains. From measurements reported in the literature, it can be seen that an effective reduction of the boundary-layer displacement thickness of 60% can be achieved with single-slot suction. Nevertheless, this would result in a hardly noticeable improvement of test-data correlation for cars with standard ground clearance. Therefore, it was decided not to install a boundary-layer suction in the wind tunnel of Volkswagenwerk AG.
- Report from the Automotive Congress and Exposition, 24-28 February 1975, Detroit, Michigan.
New York, NY USA 10017
- Hucho, W H
- Janssen, L J
- Schwartz, G
- Publication Date: 1975
- Features: References;
- Pagination: 10 p.
- TRT Terms: Aerodynamics; Boundary layer; Dislocation (Geology); Driving simulators; Road tests; Soil suction; Vehicular tunnels; Wind tunnels
- Uncontrolled Terms: Suction
- Old TRIS Terms: Boundary layer control
- Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00096930
- Record Type: Publication
- Source Agency: Highway Safety Research Institute
- Report/Paper Numbers: SAE 750066
- Files: TRIS
- Created Date: Jul 15 1975 12:00AM