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contributor authorPandey, Ashutosh
contributor authorKhan, Sajid
contributor authorDekker, Rick
contributor authorShih, Tom I-P.
date accessioned2022-02-05T22:14:08Z
date available2022-02-05T22:14:08Z
date copyright10/26/2020 12:00:00 AM
date issued2020
identifier issn0098-2202
identifier otherfe_143_01_011404.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4277179
description abstractA computational study based on unsteady Reynolds-averaged Navier–Stokes that resolves the gas–liquid interface was performed to examine the unsteady multiphase flow in a liquid-ring pump as a function of its inlet pressure (10, 40, and 80 kPa) and its impeller's rotational speed (1150, 1450, and 1750 rpm). Results obtained show the shape of the liquid ring to play a critical role in creating the expansion ratio needed to draw air into the pump and the compression ratio needed to expel air out of the pump. The dominant processes that determine the shape of the liquid ring was found to be the centrifugal force from rotation, the acceleration and deceleration due to the difference in pressure at the pump's inlet and outlet, and the eccentricity of the impeller relative to the pump's housing. Results are presented to show how the rotational speed of the impeller and the pressure at the pump's inlet affect the nature of the multiphase flow in the pump as well as the pump's effectiveness in creating a vacuum. The effects of heat transfer on the gas phase during the compression and expansion processes were found to be approximated well by polytropic processes. This computational study was validated by comparing computed with measured volumetric flowrates ingested through the suction port and the torque exerted on the pump's impeller.
publisherThe American Society of Mechanical Engineers (ASME)
titleMultiphase Flow in a Liquid-Ring Vacuum Pump
typeJournal Paper
journal volume143
journal issue1
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.4047848
journal fristpage011404-1
journal lastpage011404-13
page13
treeJournal of Fluids Engineering:;2020:;volume( 143 ):;issue: 001
contenttypeFulltext


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