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Reflected Shock Bifurcation in a Square Channel

Khokhlov, A. M. and Austin, J. M. and Bacon, C. and Aithal, S. and Riley, K. (2011) Reflected Shock Bifurcation in a Square Channel. In: 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. AIAA , Red Hook, NY. ISBN 978-1-60086-950-1.

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We examine the bifurcation of a reflected shock in a three-dimensional, square channel through numerical simulations using a distributed memory parallel adaptive mesh refinement, Navier-Stokes solver with multicomponent equation of state and microscopic transport. The three-dimensional, rather than axisymmetric, geometry introduces considerable complexity into the flow structures, particularly in the vicinity of the corners. Spanwise cross-sections show the boundary layer growth is significantly reduced in the corner regions, where the shape of the turbulent jet and recirculation regions are modified. This appears to be consistent with existing experimental studies which report the boundary layer in the corner region is deformed and the propagation velocity is reduced. A pair of triple points and a diagonally-oriented Mach reflection with shear layers directed towards the corner apex are also observed in the spanwise view.

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Additional Information:© 2011 by University of Chicago. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. AIAA 2011-646. This work was supported through the Basic Energy Sciences and Advanced Scientific Computing Research programs of the Department of Energy Office of Sciences under contract DE-SC0002954. This research used resources of the Argonne Leadership Computing Facility at Argonne National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under contract DE-AC02-06CH11357. AK acknowledges partial NSF support through AST-0709181 and TG-AST090074 grants. The authors thank Dr. Barry Smith (MCS Division of the Argonne National Laboratory) for helpful advice, and thank Manu Sharma at the University of Illinois for his contributions to this study.
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Department of Energy (DOE) Office of ScienceDE-SC0002954
Department of Energy (DOE) Office of ScienceDE-AC02-06CH11357
Record Number:CaltechAUTHORS:20140929-131140199
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50099
Deposited By: Tony Diaz
Deposited On:29 Sep 2014 21:22
Last Modified:20 Sep 2016 23:02

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