Influence of Roughness on the Two-Phase Flow Structure of Sheet Cavitation

Author:

Stutz B.1

Affiliation:

1. Universite´ de Pau et des Pays de l’Adour, Avenue de l’Universite´, 64000 Pau, France

Abstract

The purpose of this work is to describe the two-phase flow structure of sheet cavitation. The experimental study is performed in a cavitation tunnel equipped with a Venturi-type test section. Data treatments based on the analysis of transit time histograms and local time fraction histograms have been used. The rate of vapor production required to sustain the cavities is estimated. Wall pressure measurements and visualization techniques are also used to perform momentum balance. The influences of the roughness and the geometry of the divergent part located beneath the cavity on the internal two-phase flow are investigated.

Publisher

ASME International

Subject

Mechanical Engineering

Reference17 articles.

1. Laberteaux, K. R., and Ceccio, S. L., 1998, “Flow in the Closure Region of Closed Partial Attached Cavitation,” Proceedings of the Third International Symposium on Cavitation, J. M. Michel and H. Kato, eds., Grenoble, France, 1, pp. 197–202.

2. Merle, L., 1994, “Etude Experimentale et mode`le Physique d’un e´coulement Cavitant Avec Effect Thermodynamique,” Doctoral thesis, Institut National Polytechnique de Grenoble.

3. Le, Q., Franc, J. P., and Michel, J. M., 1993, “Partial Cavities: Global Behavior and Mean Pressure Distribution,” ASME J. Fluids Eng., 115, pp. 243–248.

4. Kamono, H., Kato, H., Yamaguchi, H., and Miyanaga, M., 1993, “Simulation of Cavity Flow by Ventilated Cavitation on a Foil Section,” ASME, New York, ASME-FED-153, pp. 183–189.

5. Ceccio, S. L., and Brennen, C. E., 1991, “Observations of the Dynamics and Acoustics of Travelling Bubble Cavitation,” J. Fluid Mech., 233, pp. 633–660.

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