CFD를 사용한 평행 홈 펌프 시일의 해석 개선
Improvement on Prediction of Circumferential-Groove-Pump Seal with CFD Analysis
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
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 α 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.
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 α 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.
참고문헌 (10)
- Black, H. F., "Leakage and Hybrid Bearing Properties of Serrated Seals in Centrifugal Pumps", the 6th International Conference on Fluid Sealing, Munich, Germany, G5- 61 - G5-70 (1973)
- Childs, D. W., "Testing for Rotordynamic Coefficients and Leakage : Circumferentially- Grooved Turbulent Annular Seals", the Second IFToMM International Conference on Rotordynamics, Tokyo, Japan, pp. 609-618. (1986)
- Nordmann, R., "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 (1986)
- Kim, C. H., "Analysis for Rotordynamic Coefficients of Helically-Grooved Turbulent Annular Seals", ASME Journal of Tribology, 109(1), pp.136~143 (1987)
- Iwatsubo, T, "Evaluation of Dynamic Characteristics of Parallel Grooved Seals by Theory and Experiment", the Third IFToMM International Conference on Rotordynamics, Lyon, France, pp.313~318 (1990)
- Iwatsubo, T., "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 (1990)
- Kilgore, J. J, "Rotordynamic Coefficients and Leakage Flow of Circumferentially Grooved Liquid-seals", ASME Journal of Fluids Engineering, 112, pp.250~256 (1990)
- Florjancic, S, "Annular Seals of High Energy Centrifugal Pumps : A New Theory and Full Scale Measurement of Rotordynamic Coefficients and Hydrauric Friction Factors", 박사, pp.1990
- Marquette, O. R., "An Extended Three-Control-Volume Theory for Circumferentially- Grooved Liquid Seals", ASME Journal of Tribology, 118, pp.276~285 (1996)
- Ha, T.W, "A Rotordynamic Analysis of Circumferentially-Grooved Pump Seals Based on a Three-Control-Volume Theory", KSME International Journal, 14(3), pp.261~271 (2000)