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http://dx.doi.org/10.5916/jkosme.2008.32.6.923

Prediction of Cavitation Occurrence in a Cryogenic Butterfly Valve by Flow Velocity  

Kim, Seong-Dong (한국선급 울산지부)
Kim, Beom-Seok (한국선급 에너지 산업기술센타)
Choi, Young-Do (한국해양대학교 산학협력단)
Lee, Young-Eo (한국해양대학교 기계.정보공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.32, no.6, 2008 , pp. 923-930 More about this Journal
Abstract
The butterfly valve is widely used in the industrial field as an on-off or a flow control valve. When the butterfly valve is used as a flow control valve. cavitation sometimes occurs in the range of high flow rate because of the small valve opening. Therefore. the pressure loss and the cavitation characteristics are investigated by use of a commercial CFD code. The results show that the possibility of cavitation occurrence in the cryogenic butterfly valve is very high in the case of valve opening angle below 10 degree and incident velocity over 6m/s. By increasing the inlet velocity at 10 degree of valve opening angle. the value of loss coefficient increased. However. by increasing the inlet velocity at 50 degree of valve opening angle. the value of loss coefficient decreased.
Keywords
Cryogenic butterfly valve; Cavitation; Pressure loss coefficient; Valve opening angle; Flow velocity;
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