A method for separating shock wave motion and turbulence in LDV measurements |
| |
| Authors: | C. W. Palko J. C. Dutton |
| |
| Affiliation: | (1) The Aerospace Corporation, P.O. Box 92957, MS M4/970, Los Angeles, CA 90009-2957, USA, US;(2) Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, 140 Mechanical Engineering Bldg., MC-244, 1206 West Green Street, Urbana, IL 61801, USA, US |
| |
| Abstract: | Two-component laser Doppler velocimetry (LDV) measurements were made in a planar, two-dimensional flow containing an unsteady oblique shock wave formed by the convergence of two supersonic streams past a thick plate. High-speed wall pressure measurements locate the shock wave and, consequently, allow separation of the effects of shock wave motion from the turbulence fluctuations in the LDV measurements of the shock-separated free shear layer. In the current flow isolating the large-scale changes in the position of the shock from the turbulence primarily reduces the experimental scatter rather than significantly changing the shapes or magnitudes of the turbulent stress profiles. Changes in the direction of shock motion do not significantly affect the mean velocity, but do affect the turbulent stresses. Received: 11 August 1997/Accepted: 30 September 1998 |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
