Massively separated flows due to transverse sonic jet in laminar hypersonic stream |
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| Authors: | N Qin A Redlich |
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| Institution: | (1) College of Aeronautics, Cranfield University, Cranfield, Beds MK43 0AL, UK , GB;(2) Institute of Aerodynamics and Gasdynamics, University of Stuttgart, Germany , DE |
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| Abstract: | A numerical simulation of flow interactions due to a transverse sonic jet ejected from a two-dimensional slot into a hypersonic
stream is carried out to examine the capability of Navier–Stokes solutions in predicting a massively separated flow upstream
of the jet exit. Grid sensitivity has been studied using gradually refined meshes to address the numerical accuracy of the
discretised solution of the governing equations. Comparison has been made with published experimental data regarding the separation
and reattachment points and the pressure distribution in the separated region. Flow field visualisation provides further insight
into the interaction region and reveals a small clockwise vortex immediately ahead of the jet exit, which is found to be responsible
for the second peak in the surface pressure distribution.
Received 30 June 1998 / Accepted 27 September 1998 |
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| Keywords: | :Sonic jet Hypersonic viscous flow Navier– Stokes solution Laminar separation |
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