Using conduits in which a transmitted shock wave experiences abrupt changes in its direction of propagation is an effective means for shock wave attenuation. An additional attenuation of the transmitted shock wave is obtained when the medium contained inside the conduit (through which the shock wave is transmitted) is a suspension rather than a pure gas. The present numerical study shows that adding small solid particles (dust) into the gaseous phase results in sharp attenuation of all shock waves passing through the conduit. It is shown that the smaller the dust particles diameter is, the higher the shock attenuation becomes. Increasing the dust mass loading in the suspension also causes a quick attenuation. By proper choice of dust mass loading in the suspension, or the particles diameter, it is possible to ensure that the emerging wave from the conduit exit channel is a (smooth) compression wave, rather than a shock wave.
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June 2002
Additional Technical Papers
Shock Wave Propagation Into a Dust-Gas Suspension Inside a Double-Bend Conduit
O. Igra,
O. Igra
The Pearlstone Center for Aeronautical Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel
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X. Wu,
X. Wu
The Pearlstone Center for Aeronautical Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel
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G. Q. Hu,
G. Q. Hu
The Pearlstone Center for Aeronautical Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel
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J. Falcovitz
J. Falcovitz
Institute of Mathematics, The Hebrew University, Jerusalem, Israel
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O. Igra
The Pearlstone Center for Aeronautical Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel
X. Wu
The Pearlstone Center for Aeronautical Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel
G. Q. Hu
The Pearlstone Center for Aeronautical Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel
J. Falcovitz
Institute of Mathematics, The Hebrew University, Jerusalem, Israel
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division January 18, 2001; revised manuscript received December 11, 2001. Associate Editor: E. Graf.
J. Fluids Eng. Jun 2002, 124(2): 483-491 (9 pages)
Published Online: May 28, 2002
Article history
Received:
January 18, 2001
Revised:
December 11, 2001
Online:
May 28, 2002
Citation
Igra , O., Wu , X., Hu, G. Q., and Falcovitz, J. (May 28, 2002). "Shock Wave Propagation Into a Dust-Gas Suspension Inside a Double-Bend Conduit ." ASME. J. Fluids Eng. June 2002; 124(2): 483–491. https://doi.org/10.1115/1.1466457
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