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TECHNICAL PAPERS

Unsteady Laminar Duct Flow With a Given Volume Flow Rate Variation

[+] Author and Article Information
D. Das, J. H. Arakeri

Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560 012, India

J. Appl. Mech 67(2), 274-281 (Sep 15, 1999) (8 pages) doi:10.1115/1.1304843 History: Received July 17, 1998; Revised September 15, 1999
Copyright © 2000 by ASME
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References

Figures

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The variation of pressure gradient with time for trapezoidal piston motion
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Velocity profiles at different times (a) during the acceleration of the piston motion (profiles are shown at time intervals of to*/6), (b) when the piston velocity is constant (profiles are at time intervals of (t1*−to*)/6), (c) during the deceleration of the piston velocity (profiles are at time intervals of (t2*−t1*)/4), and (d) after the piston motion has stopped (profiles are at time intervals of (0.0427−t2*)/6)
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Velocity profiles at different nondimensional times for constant acceleration of the piston motion
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Velocity profiles (a) and pressure gradient (b) for impulsively started motion
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Comparison of the present solution (solid line) for the unidirectional oscillatory flow starting from rest with the experimental data of Akhavan et al. 8 (symbols)
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Velocity profiles at different phases for two cycles, for oscillating pipe flow starting from rest at t=0(R/2ν/ω=10)

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