A Method for Pressure Calculation in Ball Valves Containing Bubbles-Reference-Cited by-同舟云学术

A Method for Pressure Calculation in Ball Valves Containing Bubbles

Published:2002-08-19 Issue:3 Volume:124 Page:765-771
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

van Lookeren Campagne C.¹,Nicodemus R.¹,de Bruin G. J.²,Lohse D.²

Affiliation:

1. Robert Bosch GmbH, Postfach 300 240, D-70442 Stuttgart, Germany

2. The University of Twente, Department Applied Physics, PO Box 217, NL 7500 AE Enschede, Netherlands

Abstract

A method of analyzing bubbly flow in a ball valve in a hydraulic circuit is presented. The dynamics of a single bubble can be well described by a quasi-static approximation of the Rayleigh-Plesset equation. Hence the presence of bubbles in low volume fractions can be modeled through an effective compressibility of the flow, which is easy to implement in commercial CFD packages. In the sample valve, a volume fraction of 4% air bubbles results in a mass flux reduction of up to 10%, as the bubbles expand due to the pressure drop in the valve and partly block it.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/124/3/765/5901200/765_1.pdf

Reference16 articles.

1. Bosch GmbH. R., 1995, “Kraftfahrttechnisches Handbuch,” 22nd edition.

2. Hilgenfeldt, S., Lohse, D., and Brenner, M. P., 1996, “Phase Diagrams for Sonoluminescing Bubbles,” Phys. Fluids, 8(11), pp. 2808–2826.

3. Leighton, T., 1994, The Acoustic Bubble, Academic Press, London.

4. Brennen, C. E., 1995, Cavitation and Bubble Dynamics, Oxford University Press, New York.

5. Plesset, M., and Prosperetti, A., 1977, “Bubble Dynamics and Cavitation,” Annu. Rev. Fluid Mech., 9, pp. 145–185.

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