Numerical study of viscous effects on centreline shock reflection in axisymmetric flow

Shoev, G and Ogawa, H 2019, 'Numerical study of viscous effects on centreline shock reflection in axisymmetric flow', Physics of Fluids, vol. 31, no. 2, pp. 1-13.


Document type: Journal Article
Collection: Journal Articles

Title Numerical study of viscous effects on centreline shock reflection in axisymmetric flow
Author(s) Shoev, G
Ogawa, H
Year 2019
Journal name Physics of Fluids
Volume number 31
Issue number 2
Start page 1
End page 13
Total pages 13
Publisher American Institute of Physics
Abstract Viscous effects on centreline shock reflection in an axisymmetric flow are studied numerically using Navier-Stokes and direct simulation Monte Carlo solvers. Computations at low Reynolds numbers have resulted in a configuration consisting of two shock waves, in contrast to the inviscid theory. On the other hand, computations at high Reynolds numbers have yielded a three-shock configuration in qualitative agreement with the inviscid theory prediction. This behaviour is explained by the presence of the so-called non-Rankine-Hugoniot zone, which accounts for the deviation of the shock structure from the inviscid paradigm. At Reynolds numbers on the verge of the transition from a two-shock to three-shock configuration, extremely high pressure that would be unattainable with the classical Rankine-Hugoniot relation for any shock configuration may occur. An analogy to the Guderley singularity in cylindrical shock implosion has been deduced for the shock behaviour from a mathematical viewpoint.
Subject Hypersonic Propulsion and Hypersonic Aerodynamics
DOI - identifier 10.1063/1.5085267
Copyright notice © 2019 Author(s). Published under license by AIP Publishing
ISSN 1070-6631
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