The paper will present an analytical model for the evaluation of the pressure and flow rate oscillations in a given axial inducer test facility. The proposed reduced order model is based on several simplifying assumptions and takes into account the facility design and the dynamic properties of the tested inducer. The model has been used for evaluating the dynamic performance of a prototype of the LE-7 engine liquid oxygen (LOX) inducer, in tests carried out under given external flow rate excitations. The main results of these calculations will be shown, including the expected oscillations under a wide range of operational conditions and the influence of facility design. Calculations showed that the only way to obtain the two linearly independent test conditions, necessary for evaluating the inducer transfer matrix, is by changing the facility suction line: Any other changes in the facility design would result ineffective. Some other important design indications provided by the analytical model will be presented in the paper.
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e-mail: angcervone@mbox.me.es.osaka-u.ac.jp
e-mail: tujimoto@me.es.osaka-u.ac.jp
e-mail: kawata@med.oit.ac.jp
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April 2009
Research Papers
Evaluation of the Dynamic Transfer Matrix of Cavitating Inducers by Means of a Simplified “Lumped-Parameter” Model
Angelo Cervone,
Angelo Cervone
Postdoctoral Fellow
Engineering Science,
e-mail: angcervone@mbox.me.es.osaka-u.ac.jp
Osaka University
, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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Yoshinobu Tsujimoto,
Yoshinobu Tsujimoto
Professor
Engineering Science,
e-mail: tujimoto@me.es.osaka-u.ac.jp
Osaka University
, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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Yutaka Kawata
e-mail: kawata@med.oit.ac.jp
Yutaka Kawata
Professor
Osaka Institute of Technology
, 5-6-1 Omiya, Asahi-Ku, Osaka 535-8505, Japan
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Angelo Cervone
Postdoctoral Fellow
Engineering Science,
Osaka University
, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japane-mail: angcervone@mbox.me.es.osaka-u.ac.jp
Yoshinobu Tsujimoto
Professor
Engineering Science,
Osaka University
, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japane-mail: tujimoto@me.es.osaka-u.ac.jp
Yutaka Kawata
Professor
Osaka Institute of Technology
, 5-6-1 Omiya, Asahi-Ku, Osaka 535-8505, Japane-mail: kawata@med.oit.ac.jp
J. Fluids Eng. Apr 2009, 131(4): 041103 (9 pages)
Published Online: March 9, 2009
Article history
Received:
February 6, 2008
Revised:
January 19, 2009
Published:
March 9, 2009
Citation
Cervone, A., Tsujimoto, Y., and Kawata, Y. (March 9, 2009). "Evaluation of the Dynamic Transfer Matrix of Cavitating Inducers by Means of a Simplified “Lumped-Parameter” Model." ASME. J. Fluids Eng. April 2009; 131(4): 041103. https://doi.org/10.1115/1.3089535
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