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Article

Simulating Pulsatile Flows Through a Pipe Orifice by an Immersed-Boundary Method

[+] Author and Article Information
Alexander Yakhot

The Pearlstone Center for Aeronautical Engineering Studies, Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beersheva 84105, Israel

Leopold Grinberg

Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beersheva 84105, Israel

Nikolay Nikitin

Institute of Mechanics, Moscow State University, 1 Michurinski prospekt, 119899 Moscow, Russia

J. Fluids Eng 126(6), 911-918 (Mar 11, 2005) (8 pages) doi:10.1115/1.1845554 History: Received July 24, 2003; Revised March 26, 2004; Online March 11, 2005
Copyright © 2004 by ASME
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References

Figures

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Schematic design of a pipe with an orifice
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L2-norm error in the no-slip boundary condition; steady flow
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Time history of the L2-norm error in the no-slip boundary condition; pulsatile flow
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L2-norm error in the no-slip boundary condition vs Δt2; pulsatile flow
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Discharge coefficient, Cd. 1—experiment, 2—present, 3— Ref. 7.
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Creeping flow. Streamlines and vorticity contours, Rem=0.01.
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Creeping flow. Dimensionless (a) pressure drop Δpc and (b) maximum velocity excess ΔUc vs d/D.
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ϕQ vs Ws,d/D=0.75, solid line—Sexl 9
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ϕQ vs Ws,d/D=0.5, solid line—Sexl 9
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Lb(t) vs Δp(t),Rem=14,d/D=0.5
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Lb(t) vs Q(t),Rem=14,d/D=0.5

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