International Journal of Fluid Machinery and Systems

한국유체기계학회 (Korean Society for Fluid machinery)
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Cause of Cavitation Instabilities in Three Dimensional Inducer

  • 투고 : 2009.06.24
  • 심사 : 2009.07.07
  • 발행 : 2009.09.01
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초록

Alternate blade cavitation, rotating cavitation and cavitation surge in rocket turbopump inducers were simulated by a three dimensional commercial CFD code. In order to clarify the cause of cavitation instabilities, the velocity disturbance caused by cavitation was obtained by subtracting the velocity vector under non-cavitating condition from that under cavitating condition. It was found that there exists a disturbance flow towards the trailing edge of the tip cavity. This flow has an axial flow component towards downstream which reduces the incidence angle to the next blade. It was found that all of the cavitation instabilities start to occur when this flow starts to interact with the leading edge of the next blade. The existence of the disturbance flow was validated by experiments.

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참고문헌

  1. Tsujimoto, Y., Horiguchi, H., Fujii, A., 2004, “Non-Standard Cavitation Instabilities in Inducers,” Proceedings of the 10th International Symposium on Transport Phenomenon and Dynamic of Rotating Machinery, ISROMAC10-2004-020, pp. 1-11.
  2. Horiguchi,H.,Watanabe,S.,Tsujimoto,Y., 2000, “A Linear Stability Analysis of Cavitation in a Finite Blade Count impeller,” ASME Journal of Fluids Engineering, Vol. 122, pp. 798-805 https://doi.org/10.1115/1.1315300
  3. Horiguchi,H.,Watanabe,S.,Tsujimoto,Y. and Aoki, M., 2000, “Theoretical Analysis of Alternate Blade Cavitation in Inducers,” ASME Journal of Fluids Engineering, Vol. 122, No. 1, pp. 156-163. https://doi.org/10.1115/1.483238
  4. Hosangadi, A., Ahuja, V., Ungewitter, R.J., “Simulation of Rotational Cavitation Instabilities in the SSME LPFP Inducer,” AIAA-2007-5536.
  5. Kang, D., Watanabe, T., Yonezawa, K., Horiguchi, H., Kawata, Y., Tsujimoto, Y., 2009, “Inducer Design to Avoid Cavitation Instabilities,” Proceeding of the 61st Turbo Machinery of Japan Conference, pp. 33-38, (in Japanese).

피인용 문헌

  1. J-Groove Technique for Suppressing Various Anomalous Flow Phenomena in Turbomachines vol.4, pp.1, 2011, https://doi.org/10.5293/IJFMS.2011.4.1.001
  2. Cavitation Performance and Instability of a Two-Bladed Inducer vol.28, pp.6, 2012, https://doi.org/10.2514/1.B34459
  3. Numerical Evaluation of Dynamic Transfer Matrix and Unsteady Cavitation Characteristics of an Inducer vol.5, pp.3, 2012, https://doi.org/10.5293/IJFMS.2012.5.3.126
  4. Study of Cavitation Instabilities in Double-Suction Centrifugal Pump vol.7, pp.3, 2014, https://doi.org/10.5293/IJFMS.2014.7.3.094
  5. Cavitation Instabilities in Turbopumps vol.29, pp.1, 2015, https://doi.org/10.3811/jjmf.29.20
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  7. Effects of inducer tip clearance on the performance and flow characteristics of a pump in a turbopump vol.231, pp.5, 2017, https://doi.org/10.1177/0957650917707656
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  9. Cavitation Instabilities During the Development Testing of a Liquid Oxygen Pump vol.33, pp.1, 2017, https://doi.org/10.2514/1.B35988
  10. Characterization of Cavitation Instabilities in a Four-Bladed Turbopump Inducer pp.1533-3876, 2017, https://doi.org/10.2514/1.B36317
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  13. Cavitation-Induced Unsteady Flow Characteristics in the First Stage of a Centrifugal Charging Pump vol.139, pp.1, 2016, https://doi.org/10.1115/1.4034362
  14. Analysis of the Staggered and Fixed Cavitation Phenomenon Observed in Centrifugal Pumps Employing a Gap Drainage Impeller vol.139, pp.3, 2017, https://doi.org/10.1115/1.4034952
  15. Entropy generation analysis for the cavitating head-drop characteristic of a centrifugal pump pp.2041-2983, 2018, https://doi.org/10.1177/0954406217753458
  16. Source Term Based Modeling of Rotating Cavitation in Turbopumps vol.141, pp.6, 2019, https://doi.org/10.1115/1.4042302