Effects of Swirling Flow Component on Discharge Coefficients of Constriction Meters : In Case of Orifice

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概要

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• Discharge coefficients of pipe orifices in swirling flow were measured and the results were discussed theoretically. Differential pressure across the orifices is affected by the swirling component and its amount is found to be a function of two parameters ; the rate of constriction of orifice opening and the intensity of swirling component. In a small orifice opening the differential pressure is decreased by the swirling component, and in a larger orifice opening it is increased. Relative change of the differential pressure was calculated theoretically by using a potential flow model. Distributions of velocities and pressures were measured and changes of energy and momentum of the flow through the orifices were discussed.

• 一般社団法人日本機械学会の論文

著者

• Kito Osami

  Assistant Faculty Of Engineering Nagoya University

• MURAKAMI Mitsukiyo

  Professor, Faculty of Engineering, Nagoya University

• Murakami Mitsukiyo

  Professor Faculty Of Engineering Nagoya University

関連論文

• Asymmetric Swirling Flows in Composite Pipe Bends
• Effects of Swirling Flow Component on Discharge Coefficients of Constriction Meters : In Case of Orifice
• Elbow Flow Meters : Effects of Wall Curvature Inaccuracies on Discharge Coefficients

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