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http://dx.doi.org/10.3795/KSME-A.2016.40.11.913

Cavitation Visualization Test for Shape Optimization of Bottom Plug in Reversing Valve  

Kim, Tae An (Dept. of Mechanical Engineering, Dong-A Univ.)
Lee, Myeong Gon (Chassis Design 2 Team, Central)
Han, Seung Ho (Dept. of Mechanical Engineering, Dong-A Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.40, no.11, 2016 , pp. 913-918 More about this Journal
Abstract
A three-way reversing valve, which provides rapid and accurate changes in the water flow direction without requiring any precise control device, is used in automotive washing machines to remove oil and dirt that remain on the machined engine and transmission blocks. Because of the complicated shape of the bottom-plug, however, cavitation occurs in the plug. In this study, the cavitation index and POC (percent of cavitation) were used to quantitatively evaluate the cavitation effect occurring in the bottom-plug on the downstream side. An optimal shape design was conducted via parametric study with a simple CAE model to avoid time-consuming CFD analysis and hard-to-achieve convergence. To verify the results of the numerical analysis, a flow visualization test was conducted using a specimen prepared according to ISA-RP75.23. In this test, the flow characteristics, such as cavitation occurring on the downstream side, were investigated using flow test equipment that included a valve, pump, flow control system, and high-speed camera.
Keywords
Cavitation Visualization Test; Shape Optimization; 3-Way Reversing Valve; Automotive Washing Machine; Cavitation Index;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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1 Proceco Ltd., Industrial Parts Washer, http://www.proceco.com/industries/automotive/Aqueous-Parts-Cleaning/Automotive-Aqueous-cleaning-Engine-Components.php.
2 Brian, N., 2007, Handbook of Valves and Actuators, Roles & Associates Ltd, UK, pp. 82-93.
3 Ku, K. W., Hong, J. G., Park, C. W. and Lee, C. W., 2012, "Correlations of Internal Nozzle Flow in Circular and Elliptical Nozzles with External Flow," Trans. Korean Soc. Mech. Eng. B, Vol. 36, No. 3, pp. 325-333.   DOI
4 Lee, J. H., Baek, S. H., Park, J. H., Park, S. I. and Park, Y. C., 2013, "Experimental and Numerical Investigation for Reducing Cavitation of Butterfly Valve with Perforated Pate," Trans. Korean Soc. Mech. Eng. B, Vol. 37, No. 9, pp. 176-177.
5 Lee, M. G., Lim, C. S. and Han, S. H., 2015, "Shape Optimization of Three-Way Reversing Valve for Cavitation Reduction," Trans. Korean Soc. Mech. Eng. A, Vol. 39, No. 11, pp. 1123-1129.   DOI
6 ISA-RP75.23, 1995, "Considerations for Evaluating Control Valve Cavitation," the Instrument Society of America.
7 Lee, D. Y., Kim, Y. K., Kim, H. D. and Kim, K. C., 2011, "Numerical Analysis and Flow Visualization Study on Two-phase Flow Characteristics in Annular Ejector Loop," Journal of the Korean Society of Visualization, Vol. 9, No. 4, pp. 47-53.   DOI
8 Joen, M. G., Kim, H. H., Suh, S. H., Choi, Y. H., Lee, H. J. and Doh, D. H., 2013, "Flow Visualization of Arteriovenous Grafting Using PIV Technique," Trans. Korean Soc. Mech. Eng. B, Vol. 37, No. 11, pp. 985-990.   DOI
9 Paik, K. J., Par, H. G. and Seo, J. S., 2013, "RANS Simulation of Cavitation and Hull Pressure Fluctuation for Marine Propeller Operating Behindhull Condition," International Journal of Naval Architecture and Ocean Engineering, Vol. 5, No. 4, pp. 502-512.   DOI
10 Kim, M. J., Jin, H. B., Son, C. H. and Chung, W. J., 2013, "Numerical Analysis on Cavitation of Centrifugal Pump," KSFM Journal of Fluids Engineering, Vol. 16, No. 2, pp. 27-34.
11 ANSYS Inc., http://www.ansys.com.
12 SAS Institute Inc., 2010, JMP ver.10, http://www.jmp.com/en_us/software/jmp.html.
13 Technical Center for High-performance Valves, 2016, http://www.dau-valve.com/html_e/Enterprise/Enterprise01_01.php
14 KS B 2101, 2003, "Test Procedures for Flow Coefficient Valves," Korean Standards Association.