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TECHNICAL PAPERS

Numerical Study of Unsteady Flow in a Centrifugal Pump

[+] Author and Article Information
Kitano Majidi

Technische Universitaet Berlin, Carnotstr. 1A, D-10587, Germany e-mail: kitano.majidi@tu-berlin.de

J. Turbomach 127(2), 363-371 (May 05, 2005) (9 pages) doi:10.1115/1.1776587 History: Received October 01, 2003; Revised March 01, 2004; Online May 05, 2005
Copyright © 2005 by ASME
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References

Figures

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Grids of the computational domain
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Location of the investigated nodal points, as well as the relative position of the impeller and volute casing at time=0 (starting the unsteady calculations, initiated from steady-state solutions)
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Unsteady pressure distribution at midspan of the blade passage at ṁ/ṁopt≈1.0
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Unsteady pressure distribution at midspan of the blade passage at ṁ/ṁopt≈0.74
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Unsteady pressure distribution at midspan of the blade passage at ṁ/ṁopt≈1.34
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Unsteady mass flow rate through each blade passage at ṁ/ṁopt≈0.74
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Unsteady mass flow rate through each blade passage at ṁ/ṁopt≈1.3
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Unsteady pressure distribution in the volute casing at ṁ/ṁopt≈1.0
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Unsteady pressure distribution in the volute casing at ṁ/ṁopt≈0.74
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Unsteady pressure distribution in the volute casing at ṁ/ṁopt≈1.34
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Unsteady pressure distribution at the tongue of the casing at ṁ/ṁopt≈1.0
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Unsteady pressure distribution at the tongue of the casing at ṁ/ṁopt≈0.74
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Unsteady pressure distribution at the tongue of the casing at ṁ/ṁopt≈1.34
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Pressure distribution at midspan of the pump (a), pressure distribution (b), and secondary flow (c) in the cross-sectional plane of the volute casing at angular advancement φ=60 deg at three different time steps at off-design point (ṁ/ṁopt≈0.74), 13
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Pressure distribution (a) and secondary flow (b) in the cross-sectional plane of the volute casing at angular advancement φ=260 deg at three different time steps at off-design point (ṁ/ṁopt≈0.74)
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Unsteady blade loading at different test conditions

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