Browse > Article
http://dx.doi.org/10.3795/KSME-B.2016.40.6.357

Study on the Performance of a Centrifugal Compressor Using Fluid-Structure Interaction Method  

Lee, Horim (LG Electronics)
Kim, Changhee (School of Mechanical Engineering, Pusan Nat'l Univ.)
Yang, Jangsik (School of Mechanical Engineering, Pusan Nat'l Univ.)
Son, Changmin (School of Mechanical Engineering, Pusan Nat'l Univ.)
Hwang, Yoonjei (LG Electronics)
Jeong, Jinhee (LG Electronics)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.6, 2016 , pp. 357-363 More about this Journal
Abstract
In this study, we perform a series of aero-thermo-mechanical analyses to predict the running-tip clearance and the effects of impeller deformation on the performance using a centrifugal compressor. During operation, the impeller deformation due to a combination of the centrifugal force, aerodynamic pressure and the thermal load results in a non-uniform tip clearance profile. For the prediction, we employ the one-way fluid-structure interaction (FSI) method using CFX 14.5 and ANSYS. The predicted running tip clearance shows a non-uniform profile over the entire flow passage. In particular, a significant reduction of the tip clearance height occurred at the leading and trailing edges of the impeller. Because of the reduction of the tip clearance, the tip leakage flow decreased by 19.4%. In addition, the polytrophic efficiency under operating conditions increased by 0.72%. These findings confirm that the prediction of the running tip clearance and its impact on compressor performance is an important area that requires further investigation.
Keywords
Centrifugal Compressor; Running Tip Clearance; Impeller Deformation; Fluid-Structure Interaction;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Pampreen, R. C., 1973, "Small Turbomachinery Compressor and Fan Aerodynamics," ASME Journal of Engineering for Gas Turbines and Power, Vol. 95, No. 3, pp. 251-256.   DOI
2 Eckardt, D., 1975, "Instantaneous Measurements in the Jet-Wake Discharge Flow of a Centrifugal Compressor Impeller," ASME Journal of Engineering for Gas Turbines and Power, Vol. 97, No. 3, pp. 337-345.   DOI
3 Mashimo, T., Watanabe, I. and Ariga, I., 1979, "Effects of Fluid Leakage on Performance of a Centrifugal Compressor," ASME Journal of Engineering for Gas Turbines and Power, Vol. 101, No. 3, pp. 337-342.   DOI
4 Ishida, M. and Senoo, Y., 1981, "On the Pressure Losses Due to the Tip Clearance of Centrifugal Blowers," ASME Journal of Engineering for Gas Turbines and Power, Vol. 103, No. 2, pp. 271-278.   DOI
5 Senoo, Y. and Ishida, M., 1987, "Deterioration of Compressor Performance Due to Tip Clearance of Centrifugal Impellers," ASME Journal of Turbomachinery, Vol. 109, No. 1, pp. 55-61.   DOI
6 Farge, T. Z., Johnson, M. W. and Maksoud, T. M. A., 1989, "Tip Leakage in a Centrifugal Impeller," ASME Journal of Turbomachinery, Vol. 111, No. 3, pp. 244-249.   DOI
7 Ishida, M., Ueki, H. and Senoo, Y., 1990, "Effect of Blade Tip Configuration on Tip Clearance Loss of a Centrifugal Impeller," ASME Journal of Turbomachinery, Vol. 112, No. 1, pp. 14-18.   DOI
8 Eisenlohr, G. and Chladek, H., 1994, "Thermal Tip Clearance Control for Centrifugal Compressor of an APU Engine," ASME Journal of Turbomachinery, Vol. 116, No. 4, pp. 629-634.   DOI
9 Weiss, C., Grates, D. R., Thermann, H. and Niehuis, R., 2003, "Numerical Investigation of the Influence of the Tip Clearance on Wake Formation inside a Radial Impeller," Proceedings of ASME Turbo Expo 2003, GT2003-38279, June 16-19, Atlanta, Georgia, USA.
10 Schleer, M. and Abhari, R. S., 2008, "Clearance Effects on the Evolution of the Flow in the Vaneless Diffuser of a Centrifugal Compressor at Part Load Condition," ASME Journal of Turbomachinery, Vol. 130, No. 3, 031009.   DOI
11 Schleer, M., Song, S. J. and Abhari, R. S., 2008, "Clearance Effects on the Onset of Instability in a Centrifugal Compressor," ASME Journal of Turbomachinery, Vol. 130, No. 3, 031002.   DOI
12 Park, T. G., Chung, H. T., Kim, H. B. and Park, J. Y., 2011, "Numerical Study on the Aerodynamic Performances of the Turbo Blower Using Fluid-Structure Interaction Method," Korean Society for Power System Engineering, Vol. 15, No. 6, pp. 35-40.   DOI