Comparative Assessment of a Barotropic Model and a Void Fraction Transport Model for Numerically Predicting Steady Sheet Cavitation
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The Tohoku-Ebara barotropic model for cavitating flow is evaluated against the popular Zwart transport model. Computations are run for a 2D hydrofoil cascade and aim to predict the steady state sheet cavitation. Two numerical approaches are applied: a specifically developed in-house solver, implemented with the Tohoku-Ebara State Law; and the ANSYS-Fluent commercial suite which includes the Zwart transport terms. The features of interest are those directly associated to cavitation or vital to blade design, i.e. water vapour volume fraction and blade pressure.