Abstract: An orifice flowmeter is an efficient device for measuring flow rate utilizing velocity and pressure variation across the orifice plate. The orifice flowmeter is widely used in industry on account of its simple geometry, little maintenance, and advantage of a moderate production cost of installation. However there has been a frequent error caused by a large pressure drop and turbulent flow in orifice downstream. The present study analyzes a efficiency and performance of an orifice flowmeter by changing the diffuser design of outlet pipe so that the orifice flowmeter with losses system can induce a decrease loss and uniform flow effectively adopting a diffuser. The two dimensional, compressible Navier-Stokes equation are numerically solved using a fully implicit finite volume scheme. Sizes of the diffuser inlet diameter are changed, and enlargement angle, area ratio and total pressure losses are analyzed to find out the best design parameters. The results show that the present the orifice flowmeter with losses system effectively decreases loss coefficient.
Publication Year: 2007
Publication Date: 2007-10-01
Language: en
Type: article
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