Abstract
A numerical study of casing treatments on a centrifugal compressor to improve stability and stall margin is presented. High efficiency, high pressure ratio, and a wide operating range are required for a high-performance centrifugal compressor. A ring groove casing treatment is effective for flow range enhancement in centrifugal compressors. Compressor performance was analyzed according to the ring groove location, and the results were compared with the case without a ring groove. The effect of guide vanes in the ring groove was also investigated. Four variants of grooves were modeled and simulated using computational fluid dynamics to optimize the groove location. Numerical analysis was performed using a commercial code ANSYS-CFX program. The simulation results showed that the ring groove increased the operating range of the compressor. The ring groove with guide vanes improved both performance of the compressor at low flow rates and the stall margin of the compressor.
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Chi-Yong Park received his B.S. degree from Korea University of Technology and Education (KUT) in 2009, and his M.S degree from Hanyang University, Korea, in 2011. He is currently a researcher in Advanced Engineering Team, Halla Climate Control Corp.
Young-Seok Choi received his B.S. degree from Seoul National University, Korea, in 1988, and his M.S. and Ph.D degrees in mechanical engineering at the same university in 1990 and 1996, respectively. He is currently a principal researcher in the Korea Institute of Industrial Technology (KITECH). His research interests are CFD and design optimization of turbomachinery.
Kyoung-Yong Lee received his B.S. and M.S. degree from Korea University of Technology and Education (KUT) in 2002 and 2004, respectively. He is concurrently in a course of Ph.D candidate in KUT and a researcher in KITECH. His research interests are system loss analysis and performance prediction of turbomachinery.
Joon-Yong Yoon received his B.S. and M.S. degrees from Hanyang University and Ph.D degree from the Univ. of Iowa in mechanical engineering. He is a professor of mechanical engineering at Hanyang University. His research areas are CFD for applications, renewable energy, MEMS, and flow control.
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Park, CY., Choi, YS., Lee, KY. et al. Numerical study on the range enhancement of a centrifugal compressor with a ring groove system. J Mech Sci Technol 26, 1371–1378 (2012). https://doi.org/10.1007/s12206-012-0320-z
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DOI: https://doi.org/10.1007/s12206-012-0320-z