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TECHNICAL PAPERS

Parallel Particle Simulation of the Near-Continuum Hypersonic Flows Over Compression Ramps

[+] Author and Article Information
J.-S. Wu, K.-C. Tseng

Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 30050, Taiwan

J. Fluids Eng 125(1), 181-188 (Jan 22, 2003) (8 pages) doi:10.1115/1.1523068 History: Received January 02, 2002; Revised August 20, 2002; Online January 22, 2003
Copyright © 2003 by ASME
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References

Anderson, J. D., Jr., 1989, Hypersonic and High Temperature Gas Dynamics, McGraw-Hill, New York.
Pullin,  D. I., and Harvey,  J. H., 1976, “A Numerical Simulation of the Rarefied Hypersonic Flat Plate Problem,” J. Fluid Mech., 78, pp. 689–707.
Vogenitz, F. W., Broadwell, J. E., and Bird, G. A., 1969, “Leading Edge Flow by the Monte Carlo Direct Simulation Technique,” 7th Aerospace Science Meeting, AIAA Paper No. 69–141.
Chun, C.-H., 1991, “Experiments on Separation at a Compression Corner in Rarefied Hypersonic Flow,” Rarefied Gas Dynamics, A. Beylich, ed., VCH Publishers, New York, pp. 562–569.
Moss, J., Rault, N., and Price, J. M., 1994, “Direct Monte Carlo Simulations of Hypersonic Viscous Interactions Including Separation,” Rarefied Gas Dynamics: Space Science and Engineering, B. D. Shzgal and D. P. Weave, eds., Washington, DC.
Moss, J. N., Price, J. M., and Chun, C. H., 1991, “Hypersonic Rarefied Flow About a Compression Corner—DSMC Simulation and Experiment,” 26th Thermophysics Conference, AIAA Paper No. 91-1313.
Bird, G. A., 1994, Molecular Gas Dynamics and the Direct Simulation of Gas Flows, Oxford University Press, New York.
Robinson, C. D., 1998, “Particle Simulation on Parallel Computers With Dynamic Load Balancing,” Ph.D. thesis, Imperial College of Science, Technology and Medicine, U.K.
Wu,  J.-S., Tseng,  K.-C., and Kuo,  C.-H., 2001, “The Direct Simulation Monte Carlo Method Using Unstructured Adaptive Mesh and Its Application,” Int. J. Numer. Methods Fluids, accepted for publication.
Wu,  J.-S., Tseng,  K.-C., and Yang,  T.-J., 2001, “Parallel Implementation of the Direct Simulation Monte Carlo Method Using Unstructured Mesh and Its Application,” Int. J. Numer. Methods Heat Fluid Flow, submitted for publication.
Hypermesh, Version 2.0, Altair Computing, Altair Engineering, Inc., Maplelawn, MI.
Walshaw, C., Cross, M., Everett, M. G., Johnson, S., and McManus, K., 1995, “Partitioning and Mapping of Unstructured Meshes to Parallel Machine Topologies,” Proc. Irregular Parallel Algorithms for Irregularly Structured Problems, A. Ferreia and J. Rolim, eds., 980 , LNCS, Springer, Berlin, pp. 121–126.

Figures

Grahic Jump Location
Streamline contours at different freestream Knudsen number for β=15 deg (a) Kn=0.0066; (b) Kn=0.0032; (c) Kn=0.0022; (d) Kn=0.0010
Grahic Jump Location
Density contours at different freestream Knudsen number for β=35 deg (a) Kn=0.0066; (b) Kn=0.0032; (c) Kn=0.0022; (d) Kn=0.0010
Grahic Jump Location
Streamline contours at different freestream Knudsen number for β=35 deg (a) Kn=0.0066; (b) Kn=0.0032; (c) Kn=0.0022; (d) Kn=0.0010
Grahic Jump Location
Pressure coefficient distribution along the solid wall for β=15 deg, 25 deg, and 35 deg (case 4, Kn=0.0010)
Grahic Jump Location
Density and streamline contours at β=35 deg (long ramp, case 5, Kn=0.0010)
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Flow chart of the parallel DSMC method
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Cell renumbering scheme in the parallel DSMC method
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Mesh refinement scheme for unstructured triangular mesh
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Sketch of the two-dimensional hypersonic compression corner flow
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Unstructured adaptive mesh for case 5 (xr=71.4 mm, β=25 deg) (163,658 cells, 3 levels of mesh adaptation)
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Multilevel graph partition for case 5 (xr=71.4 mm, β=25 deg) (32 CPUs)
Grahic Jump Location
Pressure coefficient distribution along the solid wall for β=15 deg, 25 deg, and 35 deg (case 1, Kn=0.0066)
Grahic Jump Location
Shear stress coefficient distribution along the solid wall for β=15 deg, 25 deg, and 35 deg (case 1, Kn=0.0066)
Grahic Jump Location
Heat transfer coefficient distribution along the solid wall for β=15 deg, 25 deg, and 35 deg (case 1, Kn=0.0066)
Grahic Jump Location
Density contours at different freestream Knudsen number for β=15 deg (a) Kn=0.0066; (b) Kn=0.0032; (c) Kn=0.0022; (d) Kn=0.0010

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