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http://dx.doi.org/10.5139/JKSAS.2008.36.1.014

Evaluation of Loss Coefficient of a Butterfly Valve with Valve Closed Angles  

Lee, Jee-Keun (전북대학교 기계항공시스템공학부)
Rho, Byung-Joon (전북대학교 기계항공시스템공학부)
Choi, Hee-Joo (퍼스텍(주))
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.1, 2008 , pp. 14-21 More about this Journal
Abstract
In this study, flow characteristics of a small-sized butterfly valve with the valve disk diameter of 25.4 mm have been investigated experimentally for the valve closed angles. In order to examine the flow characteristics of the butterfly valve, loss coefficient (Kv) was obtained at the valve closed angles of 0$^{\circ}$, 5$^{\circ}$, 10$^{\circ}$, 20$^{\circ}$ and 30$^{\circ}$. In addition, the effects of the valve disk edge shape were examined. As the result of the experiment, the maximum loss coefficient (Kvmax) was decreased with the increase of the valve closed angle, and it had the maximum decrease ratio at the valve disk angles of 0$^{\circ}$~5$^{\circ}$. The valve disk edge shape have an effect on the loss coefficient of the valve around the small valve closed angle.
Keywords
Butterfly Valve; Valve Closed Angle; Loss Coefficient; Controllable Disk Angle;
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1 ddy, A. L., Morris, M. J., and Dutton, J. C., "An Investigation of Compressible Flow Characteristics of Butterfly Valves," ASME Journal of Fluids Engineering, Vol. 107, 1985, pp. 512-517   DOI
2 McPherson, M. D., Strausser, H. S. and Williams, J. C., "Butterfly Valve Flow Characteristics," J. Hydraulic Division, ASCE, Vol. 83, 1951, pp. 1167.1-1167.27
3 Harrington, D. L. and Bolt, J. A., "Analysis and Digital Simulation of Carburetor Metering," SAE paper No. 700082, 1970, SAE Trans. Vol. 79
4 Lee, J. U., Lee, D. H. and Choi, Y. H., "Numerical Analysis of Incompressible and Compressible Flow Around a Butterfly Valve," Energy Eng. J., Vol. 11, No. 1, 2002, pp. 26-33
5 Park, Y. C., Kang, J. H., Lee, J. M. and Kang, J., "Optimization of Butterfly Valve's Disc Using the DACE Model Based on CAE," Transactions of KSOE, Vol. 20, No. 3, 2006, pp. 96-102
6 Cho, D. H., "Flow Characteristics in the Downstream Region of a Butterfly Valve with Various Disk Operating Angle," Journal of Korea Society of Marine Environment & Study, Vol. 12, No. 4, 2006, pp. 267-272
7 Morris, M. J., and Dutton, J. C., "An Experimental Investigation of Butterfly Valve Performance Downstream of an Elbow," ASME Journal of Fluids Engineering, Vol. 113, 1991, pp. 81-85   DOI
8 Yoon, J. Y., Lee, S. J. and Kim, E. S., "Numerical Analysis of Flows in Butterfly Valves to Prevent Cavitation," Journal of KFMA, Vol. 7, No. 1, 2004, pp. 9-16
9 Morris, M. J., and Dutton, J. C., "The Performance of Two Butterfly Valves Mounted in Series," ASME Journal of Fluids Engineering, Vol. 113, 1991, pp. 419-423   DOI