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TECHNICAL PAPERS

Blast Wave Reflection From Wedges

[+] Author and Article Information
O. Igra, G. Hu

Pearlstone Center for Aeronautical Engineering Studies, Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel

J. Falcovitz

Institute of Mathematics, Hebrew University of Jerusalem, Jerusalem, Israel

W. Heilig

Ernst Mach Institute, Eckerstr. 4, 79108 Freiburg, Germany

J. Fluids Eng 125(3), 510-519 (Jun 09, 2003) (10 pages) doi:10.1115/1.1567310 History: Received March 29, 2002; Revised December 04, 2002; Online June 09, 2003
Copyright © 2003 by ASME
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References

Ben-Dor, G., 1991, Shock Wave Reflection Phenomena, Springer, New York.
Kobayashi, Y., Takakura, Y., and Higashino, F., 1999, “On Reflection Patterns of Blast Waves and the Real Gas Effect,” G. J. Ball, R. Hillier, and G. T. Roberts, eds., Shock Waves, Proceedings of the 22nd International Symposium on Shock Waves, London, UK.
Heilig, W., 2000 “Use of the Shock Tube for Generating Blast Waves,” Proceedings of the 16th International Symposium on Military Aspects of Blast and Shock, Cranfield University, Oxford, UK.
Falcovitz,  J., and Ben-Artzi,  M., 1995, “Recent Developments of the GRP Method,” Japan Soc. Mech. Engrs. Int. J. Ser. B, 38, pp. 497–517.
Strang,  G., 1968, “On the Construction and Comparison of Difference Schemes,” SIAM (Soc. Ind. Appl. Math.) J. Numer. Anal., 5, pp. 506–517.
Igra,  O., Falcovitz,  J., Reichenbach,  H., and Heilig,  W., 1996, “Experimental and Numerical Study of the Interaction Between a Planar Shock Wave and a Square Cavity,” J. Fluid Mech., 313, pp. 105–130.
Falcovitz,  J., Alfandary,  G., and Hanoch,  G., 1997, “A Two-Dimensional Conservation Laws Scheme for Compressible Flows With Moving Boundaries,” J. Comput. Phys., 138, pp. 83–102.
Igra,  O., Wu,  X., Falcovitz,  J., Meguro,  T., Takayama,  K., and Heilig,  W., 2001, “Experimental and Numerical Study of Shock Wave Propagation Through Double-Bend Ducts,” J. Fluid Mech., 437, pp. 255–282.
Igra,  O., Wu,  X., Hu,  G., and Falcovitz,  J., 2002, “Shock Wave Propagation Into a Dust-Gas Suspension Inside a Double-Bend Conduit,” ASME J. Fluids Eng., 124, pp. 483–491.

Figures

Grahic Jump Location
Blast wave generation in a short driver shock tube. The driver length is 45 mm P4=5 bars,P1=748 torr, and T1=20.1°C.
Grahic Jump Location
Schematic description of the wedge location in the shock tube test section
Grahic Jump Location
Wave pattern evolved over the wedge 132 μs after the incident blast wave passed the wedge leading edge. Initial conditions are: the driver length is 45 mm P4=5 bars,P1=748 torr, and T1=20.1°C. The driver and the driven gases are air.
Grahic Jump Location
Wave pattern evolved over the wedge 192 μs after the incident blast wave passed the wedge leading edge. Initial conditions as indicated in Fig. 3.
Grahic Jump Location
Wave pattern evolved over the wedge 252 μs after the incident blast wave passed the wedge leading edge. Initial conditions as indicated in Fig. 3.
Grahic Jump Location
Wave pattern evolved over the wedge 312 μs after the incident blast wave passed the wedge leading edge. Initial conditions as indicated in Fig. 3.
Grahic Jump Location
Recorded and computed pressure signatures over the wedge and at the shock tube top wall. Initial conditions are given in Fig. 3. o=measured results, solid line=computed for blast wave, dashed line=computed for a similar shock wave.
Grahic Jump Location
Wave pattern evolved over the wedge 106 μs after the incident blast wave passed the wedge leading edge. The driver length is 45 mm, P4=30 bar,P1=748.7 torr, and T1=20.4°C. Both the driver and the driven gases are air.
Grahic Jump Location
Wave pattern evolved over the wedge 163 μs after the incident blast wave passed the wedge leading edge. Initial conditions as indicated in Fig. 8.
Grahic Jump Location
Wave pattern evolved over the wedge 221 μs after the incident blast wave passed the wedge leading edge. Initial conditions as indicated in Fig. 8.
Grahic Jump Location
Recorded and computed pressure signatures over the wedge and at the shock tube upper wall. Initial conditions are given in Fig. 8. o=measured results, solid line=computed blast wave, dashed line=computed shock wave.
Grahic Jump Location
Wave pattern evolved over the wedge 197 μs after the transmitted blast wave passed the wedge leading edge. Initial conditions are: driver’s length 15 mm, P4=5 bar,P1=738.6 torr, and T1=20.9°C. Both the driver and the driven gases are air.
Grahic Jump Location
Wave pattern evolved over the wedge 343 μs after the incident blast wave passed the wedge leading edge. Initial conditions as indicated in Fig. 12.
Grahic Jump Location
Recorded and computed pressure signatures over a wedge and at the shock tube top wall. Initial conditions as indicated in Fig. 12. o=measured results, solid line=blast wave and dashed line=similar shock wave.
Grahic Jump Location
Blast wave generation in a very short driver shock tube. The driver length is 15 mm, P4=5,P1=738.6 torr, and T1=20.9°C.

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