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Title: Performance evaluation of orifice plate assemblies under non-standard conditions using CFD
Authors: Singh, R K
Singh, S N
Seshadri, V
Keywords: Orificemeter
Discharge coefficient
Computational fluid dynamics
Reynolds number
Plate thickness
Diameter ratio
Issue Date: Dec-2010
Publisher: NISCAIR-CSIR, India
Abstract: The performance characteristics of small diameter orificemeters (diameter = 40 mm NB) for four diameter ratios with higher plate thicknesses are evaluated using computational fluid dynamics (CFD) under the non-standard conditions using water as the working fluid. The plate thicknesses considered are larger than the maximum allowed thickness specified in standard, ISO- 5167. The study has shown the effect of plate thickness on the value of C<sub>d</sub> to be only marginal up to twice the allowable plate thickness for all the diameter ratios studied. The value of the C<sub>d</sub> marginally decreases with increase in the plate thickness for lower <img src='/image/spc_char/beta.gif' border=0> values, whereas the value of C<sub>d</sub> increases with increase in plate thicknesses for higher <img src='/image/spc_char/beta.gif' border=0> values.
Description: 397-406
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.17(6) [December 2010]

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