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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

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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