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Action of gas-permeable materials of varied porosity on the supersonic separated flow over a forward-facing step

Action of gas-permeable materials of varied porosity on the supersonic separated flow over a... Abstract Results of an experimental and numerical study of a supersonic flow over a model forward-facing step with a gas-permeable insert of variable porosity installed upstream of the step are reported. The free-stream Mach number was M = 2.0, 2.5, and 3.0, and the Reynolds number, Re = 5·105. The gas-permeable insert was either a section of a perforated plate or a section of a highly porous permeable cellular material. The flow visualization performed using the shadow method, PIV, and a soot-oil film has shown that the characteristic size of the vortical flow region exhibited a profound decrease on increasing the insert porosity. In numerical calculations performed at high values of that po-rosity, data on the displacement of the recirculation flow region into the porous material were obtained. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Action of gas-permeable materials of varied porosity on the supersonic separated flow over a forward-facing step

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Publisher
Springer Journals
Copyright
2018 Pleiades Publishing, Ltd.
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S086986431802004X
Publisher site
See Article on Publisher Site

Abstract

Abstract Results of an experimental and numerical study of a supersonic flow over a model forward-facing step with a gas-permeable insert of variable porosity installed upstream of the step are reported. The free-stream Mach number was M = 2.0, 2.5, and 3.0, and the Reynolds number, Re = 5·105. The gas-permeable insert was either a section of a perforated plate or a section of a highly porous permeable cellular material. The flow visualization performed using the shadow method, PIV, and a soot-oil film has shown that the characteristic size of the vortical flow region exhibited a profound decrease on increasing the insert porosity. In numerical calculations performed at high values of that po-rosity, data on the displacement of the recirculation flow region into the porous material were obtained.

Journal

Thermophysics and AeromechanicsSpringer Journals

Published: Mar 1, 2018

References