A method for pressure calculations in ball valves containing bubbles

C. van Lookeren campagne, R. Nicodemus, G.J. de Bruin, D. Lohse

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)
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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.
Original languageEnglish
Pages (from-to)765-771
Number of pages7
JournalJournal of fluids engineering
Issue number3
Publication statusPublished - 2002


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