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contributor authorMaynes, D.
contributor authorHolt, G. J.
contributor authorBlotter, J.
date accessioned2017-05-09T00:58:53Z
date available2017-05-09T00:58:53Z
date issued2013
identifier issn0098-2202
identifier otherfe_135_3_031302.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/151814
description abstractThis paper reports results of an experimental investigation of the loss coefficient and onset of cavitation caused by water flow through perforated plates of varying thickness and flow area to pipe area ratio at high speeds. The overall plate loss coefficient, point of cavitation inception, and point where critical cavitation occurs are functions of perforation hole size, number of holes, and plate thickness. Sixteen total plates were considered in the study with the total perforation hole area to pipe area ratio ranging from 0.11 and 0.6, the plate thickness to perforation hole diameter ranging from 0.25 to 3.3, and the number of perforation holes ranging from 4 to 1800. The plates were mounted in the test section of a closed water flow loop. The results reveal a complex dependency between the plate loss coefficient with total freearea ratio and the plate thickness to perforation hole diameter ratio. In general, the loss coefficient decreases with increasing freearea ratio and increasing thicknesstohole diameter ratio. A model based on the data is presented that predicts the loss coefficient for multiholed perforated plates with nonrounded holes. Furthermore, the data show that the cavitation number at the points of cavitation inception and critical cavitation increases with increasing freearea ratio. However, with regard to the thicknesstohole diameter ratio, the cavitation number at inception exhibits a local maximum at a ratio between 0.5 and 1.0. Empirical models to allow prediction of the point of cavitation inception and the point where critical cavitation begins are presented and compared to single hole orifice plate behavior.
publisherThe American Society of Mechanical Engineers (ASME)
titleCavitation Inception and Head Loss Due to Liquid Flow Through Perforated Plates of Varying Thickness
typeJournal Paper
journal volume135
journal issue3
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.4023407
journal fristpage31302
journal lastpage31302
identifier eissn1528-901X
treeJournal of Fluids Engineering:;2013:;volume( 135 ):;issue: 003
contenttypeFulltext


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