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A Study on Flow Coefficient and Flow Characteristics for Butterfly Valve by Numerical Analysis  

Kwak, Kyung-Min ((주)대정밸브 기술연구소)
Cho, Ji-Sung (대구기계부품연구원)
Kim, Jin-Dae (대구기계부품연구원)
Lee, Jung-Hyung ((주)대정밸브 기술연구소)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.11, no.4, 2012 , pp. 62-66 More about this Journal
Abstract
The objective of this study is to simulate flow coefficient and flow characteristics such as velocity and pressure distribution for butterfly valve. Butterfly valves used in this study are 65A, 80A and 100A, in size, and of which the opening angle is varied. The flow coefficient, Kv, increases as the disc opening and valve size are increase. When using flow coefficient meanwhile specific curve of flow rate is also determined. The flow velocity between disc and seat increase as the disc opening decrease. The re-circulating zone is also observed in downstream behind disc.
Keywords
Butterfly Valve; Flow Coefficient; Velocity Distribution; Pressure Distribution; Numerical Analysis;
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