EXPERIMENTAL INVESTIGATION OF THE WALL PRESSURE FLUCTUATIONS IN SUBSONIC SEPARATED FLOWS
- 26 January 1967
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
Experimental measurements of static pressures, fluctuating wall pressures, and mean velocity profiles are presented for subsonic turbulent separated flows. Separation was induced by three types of geometrical configurations: Backward-facing steps 1/2, 1, and 1-1/2 inches high; forward- facing steps 1/2 and 1 inch high; and fences 1/2 and 1 inch high. Measurements were made for free stream velocities of 170, 280, and 370 ft/sec. It was found that the base pressure was essentially Reynolds number independent. The separation length was independent of speed and proportional to the height of the configuration causing flow separation. The wall pressure fluctuations associated with the separated flows were of higher magnitudes than those caused by attached turbulent boundary layers and reached maximum values near reattachment.Keywords
This publication has 0 references indexed in Scilit: