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Experimental study of a supersonic turbulent boundary layer using PIV |
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| Authors: | HE Lin YI ShiHe ZHAO YuXin TIAN LiFeng & CHEN Zhi College of Aerospace Material Engineering National University of Defense Technology Changsha China |
| Institution: | HE Lin *,YI ShiHe,ZHAO YuXin,TIAN LiFeng & CHEN Zhi College of Aerospace and Material Engineering,National University of Defense Technology,Changsha 410073,China |
| Abstract: | Particle image velocimetry was applied to the study of the statistical properties and the coherent structures of a flat plate turbulent boundary layer at Mach 3. The nanoparticles with a good flow-following capability in supersonic flows were adopted as the tracer particles in the present experiments. The results show that the Van Driest transformed mean velocity profile satisfies the incompressible scalings and reveals a log-law region that extends to y/ =0.4, which is further away from the wall than that ... |
| Keywords: | PIV turbulence supersonic boundary layer hairpin vortices statistical property coherent structures |
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