Browse > Article
http://dx.doi.org/10.9725/kstle.2008.24.6.291

Improvement on Prediction of Circumferential-Groove-Pump Seal with CFD Analysis  

Ha, Tae-Woong (Dept. of Mechanical Automotive Engineering, Kyungwon University)
Publication Information
Tribology and Lubricants / v.24, no.6, 2008 , pp. 291-296 More about this Journal
Abstract
In order to improve the leakage prediction and rotordynamic analysis of an annular seal with a smooth rotor and circumferentially grooved stator, CFD analysis using FLUENT has been performed to determine the groove penetration angle a which is the angle of separation line between control volumes II and III in groove section of Ha and Lee's three-control-volume theory. Validation to the present analysis using new penetration angle determined by the CFD analysis is achieved by comparisons with the results of published Ha and Lee's analysis. For the leakage prediction the present analysis shows slight improvement and CFD results yields the best. Direct damping and cross-coupled stiffness coefficients are predicted better to the experimental ones. However, direct stiffness coefficient is predicted worse.
Keywords
centrifugal pump; CFD; circumferential-groove seal; leakage; penetration angle; rotordynamic coefficients;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Black, H. F. and Cochran, E. A., 1973, 'Leakage and Hybrid Bearing Properties of Serrated Seals in Centrifugal Pumps', presented at the 6th International Conference on Fluid Sealing, Munich, Germany, G5-61 - G5-70
2 Iwatsubo, T. and Sheng, B., 1990, 'Evaluation of Dynamic Characteristics of Parallel Grooved Seals by Theory and Experiment', in Proceedings of the Third IFToMM International Conference on Rotordynamics, Lyon, France, pp. 313-318
3 Iwatsubo, T., Sheng, B., and Ono, M., 1990, 'Experiment of Static and Dynamic Characteristics of Spiral Grooved Seals', Rotordynamic Instability Problems in High-Performance Turbomachinery, NASA CP No. 3122, proceedings of a workshop held at Texas A&M University, pp. 223-234
4 Nordmann, R., Dietzen, F. J., Janson, W., Frei, A., and Florjancic, S., 1986, 'Rotordynamic Coefficients and Leakage Flow of Parallel Grooved Seals and Smooth Seals', Rotordynamic Instability Problems in High-Performance Turbomachinery, NASA CP No. 2338, proceedings of a workshop held at Texas A&M University, pp. 129-153
5 Kim, C. H., and Childs, D. W., 1987, 'Analysis for Rotordynamic Coefficients of Helically-Grooved Turbulent Annular Seals', ASME Journal of Tribology, Vol. 109(1), pp. 136-143   DOI
6 Childs, D. W., and Kim, C. H., 1986, 'Testing for Rotordynamic Coefficients and Leakage : Circumferentially-Grooved Turbulent Annular Seals', in Proceedings of the Second IFToMM International Conference on Rotordynamics, Tokyo, Japan, pp. 609-618
7 Kilgore, J. J. and Childs, D. W., 1990, 'Rotordynamic Coefficients and Leakage Flow of Circumferentially Grooved Liquid-seals', ASME Journal of Fluids Engineering, Vol. 112, pp. 250-256   DOI
8 Marquette, O. R. and Childs D. W., 1996, 'An Extended Three-Control-Volume Theory for Circumferentially-Grooved Liquid Seals', ASME Journal of Tribology, Vol. 118, pp. 276-285   DOI
9 Florjancic, S., 1990, 'Annular Seals of High Energy Centrifugal Pumps : A New Theory and Full Scale Measurement of Rotordynamic Coefficients and Hydrauric Friction Factors', Ph.D. Dissertation, Swiss Federal Institute of Technology, Zurich, Switzerland
10 Ha, T.W. and Lee, A. S., 2000, 'A Rotordynamic Analysis of Circumferentially-Grooved Pump Seals Based on a Three-Control-Volume Theory', KSME International Journal, Vol. 14, No. 3, pp. 261-271