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ADDITIONAL TECHNICAL PAPERS

Shock Wave Propagation Into a Dust-Gas Suspension Inside a Double-Bend Conduit

[+] Author and Article Information
O. Igra, X. Wu, 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

J. Fluids Eng 124(2), 483-491 (May 28, 2002) (9 pages) doi:10.1115/1.1466457 History: Received January 18, 2001; Revised December 11, 2001; Online May 28, 2002
Copyright © 2002 by ASME
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References

Figures

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Schematic description of the investigated conduit. All dimensions are in mm. Ms=1.347, P1, P2, P3 and P4 indicate positions where pressure histories are computed.
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(a) Shadowgraph/schlieren results in pure air. Initial flow conditions are: P0=0.97 bar,T0=296.5 K and Ms=1.347. (b) Simulations of the flow shown in Fig. 2(a).
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Flow simulation for dusty gas, d=5 μm, η=2. Initial conditions as in Fig. 2.
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(a) Flow simulation for dusty gas, d=20 μm, η=2. Initial conditions as in Fig. 2. (b) Flow simulation as in Fig. 4(a) but with double number of grid points; (c) flow simulation as in Fig. 4(a) but using elastic rebound conditions for the solid particles.
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Flow simulation for dusty gas, d=50 μm, η=2. Initial conditions as in Fig. 2.
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Pressure variations along the duct upper wall. Initial conditions as in Fig. 2. In the suspension d=5 μm and η=2.
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(a) Isopycnics in the gaseous phase. (b) Pressure and gas density variations along a line connecting the two expansive corners at t=525 μs, d=5 μm, η=2. (c) Isopycnics in the solid phase. (d) Spatial dust density variations along a line connecting the two expansive corners at t=525 μs, d=5 μm, η=2. Initial conditions as in Fig. 2.
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Flow simulation for dusty gas, η=0.5, d=10 μm. Initial conditions as in Fig. 2.
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Flow simulation for dusty gas, η=2, d=10 μm. Initial conditions as in Fig. 2.
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Flow simulation for dusty gas η=5, d=10 μm. Initial conditions as in Fig. 2.
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Effects of changes in the dust loading on obtained pressure histories at ports P1 to P4. d=10 μm. Initial conditions as in Fig. 2.
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(a) Effects of changes in the particle diameter on obtained pressure histories at ports P1 to P4. η=2. Initial condition as in Fig. 2(a). (b) Effects of changes in the grid resolution on the obtained pressure histories for η=2 and d=20 μm. Initial conditions as is in Fig. 2.

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