VISVE, a vorticity based model applied to 2-D hydrofoils in backing and cavitating conditions

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Date

2018-05-03

Authors

Xing, Lu, Ph. D.

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Abstract

In this study, the VIScous Vorticity Equation (VISVE) method was applied to predict flow around 2-D hydrofoils in backing and cavitating conditions. In backing conditions, the gridding and solver schemes were modified to accommodate the geometrical characteristics of the backing hydrofoils. In cavitating conditions, VISVE and the mixture model, which introduces an additional transport equation for the vapor volume fraction, were coupled together to predict the partial cavitating flow around 2-D hydrofoils. The VISVE method was designed to be both spatially compact and numerically efficient in comparison with the commonly used Reynolds Averaged Navier-Stokes (RANS) models. Velocity, vorticity and pressure from the VISVE model were compared with those from a commercial RANS solver to assess the accuracy of the numerical results. With the validation of the 2-D VISVE model, VISVE shows the prospective to model the 3D wetted and cavitating flow.

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