Measurement of Dynamic Characteristics of an Inducer in Cavitating Conditions

Takuya Ashida; Keita Yamamoto; Koichi Yonezawa; Hironori Horiguchi; Yutaka Kawata; Yoshinobu Tsujimoto

doi:10.5293/IJFMS.2017.10.3.307

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자료유형: 학술저널

저자정보: Takuya Ashida (Osaka University) Keita Yamamoto (Osaka University) Koichi Yonezawa (Osaka University) Hironori Horiguchi (Osaka University) Yutaka Kawata (Osaka Institute of Technology) Yoshinobu Tsujimoto (Osaka University)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.10 No.3

발행연도: 2017.9

수록면: 307 - 317 (11page)

DOI: 10.5293/IJFMS.2017.10.3.307

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In liquid-propellant rockets, POGO instability can occur, in which a fluctuation of propellant supply to the engine, a thrust fluctuation, and a structural vibration are coupled. For the prediction of this instability, it is required to provide dynamic characteristics of the pump represented as the transfer matrix correlating the upstream and downstream pressure and flow rate fluctuations. In the present study, the flow rate fluctuation is evaluated from the fluctuation of pressure difference at the different locations assuming that the fluctuation is caused by the inertia of the flow rate fluctuation. The experiments were performed in some flow conditions, and it was shown that the tendencies of dynamic characteristics are related to excitation frequencies, cavitation numbers and flow rate coefficients.

#Inducer #Cavitation #Dynamic transfer matrix #Dynamic characteristics #Experiment #CFD

참고문헌 (13)

참고문헌 신청

[학술지(정기간행물)] - Rubin, S. / 1966 / Longitudinal Instability of Liquid Rockets Due to Propulsion Feedback (POGO) / Journal of Spacecraft 3 (8) : 1188 ~ 1195

[학술지(정기간행물)] - Tsujimoto, Y. / 2001 / Unified Treatment of Instabilities of Turbomachines / AIAA Journal of Propulsion and Power 17 (3) : 636 ~ 643

[보고서] - Ohashi, H. / 1968 / Analytical and Experimental Study of Dynamic Characteristics of Turbopumps : 1 ~ 108

[학술지(정기간행물)] - Brennen, C. / 1976 / The Dynamic Transfer Function for a Cavitating Inducer / ASME Journal of Fluid Engineering 98 : 182 ~ 191

[학술지(정기간행물)] - Ng, S. L. / 1978 / Experiments on the Dynamic Behavior of Cavitating Pumps / ASME Journal of Fluids Engineering 100 : 166 ~ 176

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