Numerical simulation of the cavitation flow around a hydrofoil based on a coupled CFD-PBM model

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Abstract

A coupled cavitation model is presented using a two-phase flow CFD method and a population balance model of cavitation bubbles. The population balance equation of bubbles is solved by a discrete method which represents a continuous bubble size distribution in term of a series of discrete size classes. Mass transfer between phases is defined by a principle of bubbles generation which is regulated by Zwart-Gerber-Belamri model. This coupled model of cavitation flow is used to predict the cavitation flow past a hydrofoil. The method is validated against experimental data for pressure coefficient on the airfoil. Characteristics of flow including the bubble distribution on flow over hydrofoil are investigated. The cyclic forces on hydrofoil and cavity volume fractions of self-oscillation are characterized by a transient flow solution. For illustration, a scattering-intensity-weighted vapor volume fraction based on Rayleigh scattering is defined and its distribution is compared to the physical vapor volume fraction to show the difference between computation and experiment.

Original languageEnglish
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
Country/TerritoryUnited States
CitySan Diego
Period01/7/1901/11/19

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