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Cavitation inception in fast startup

Duplaa, Sébastien and Coutier-Delgosha, Olivier and Dazin, Antoine and Bois, Gérard and Caignaert, Guy and Roussette, Olivier Cavitation inception in fast startup. (2008) In: The Twelfth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery - ISROMAC-12, 17 February 2008 - 22 February 2008 (Honolulu-Hawaii, United States).

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Abstract

The start-up of rocket engine turbopumps is generally performed only in a few seconds. It implies that these pumps reach their nominal operating conditions after only a few rotations. During these first rotations of the blades, the flow evolution in the pump is governed by transient phenomena, based mainly on the flow rate and rotation speed evolution. These phenomena progressively become negligible when the steady behaviour is reached. The pump transient behaviour induces significant pressure fluctuations which may result in partial flow vaporization, i.e. cavitation. An existing experimental test rig has been updated in the LML laboratory (Lille, France) for the start-ups of a centrifugal pump. The study focuses on cavitation induced during the pump start-up. Instantaneous measurement of torque, mass flow rate, inlet and outlet unsteady pressures, and pump rotation velocity enable to characterize the pump behaviour during rapid starting periods.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-00904935
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Arts et Métiers ParisTech (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Centrale de Lille (FRANCE)
Other partners > Université Lille 1, Sciences et Technologies - Lille 1 (FRANCE)
Laboratory name:
Funders:
CNES - SNECMA
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Deposited By: Sebastien Duplaa
Deposited On:05 Nov 2013 09:34

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