The suction performance of turbopumps in cryogenic fluids is basically much better than that in cold water because of the thermodynamic effect of cavitation. However, it is not still clear how the thermodynamic effect works on cavitation instabilities, such as rotating cavitation and cavitation surge. In the present study, the unsteady heat exchange between the cavity and the surrounding liquid is taken into account in a stability analysis using a singularity method. The results are qualitatively compared to existing experiments to clarify the research needs for deeper understanding.

Issue Section:
Technical Papers
Keywords:
aerospace engines, cavitation, cryopumping, flow instability, heat transfer, rotational flow, thermodynamics, rotating cavitation, thermodynamic effect, cascade, closed-cavity model, singularity method
Topics:
Cavitation, Cavities, Blades, Flow (Dynamics)
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Copyright © 2007
 by American Society of Mechanical Engineers
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