Evaluation on the Application of Two-Fluid Multiphase Model to Supercavity

Abstract:

The lubrication of external liquid with supercavity has been the goals of specialists for many years. Either ventilated cavity or natural cavity is firstly related to multiphase flow. In this paper, in order to quantitatively predict the cavitating flow especially the ventilated supercavity and understand the structure of flow field in the cavity, two kinds of multiphase model including the homogeneous flow model and the two-fluid model were adopted separately. Besides, SST and DES turbulence model are used for steady and unsteady simulations. By comparing the simulating results with experimental results in water tunnel, the two-fluid model was proved to have the high accuracy in predicting the ventilated supercavity including the cavity shape and lift coefficient of the vehicle. On the other hand, for natural cavitation, the mixture model and the two-fluid model have little difference in predicting the pressure coefficient, however, the two-fluid model can give more detailed flow field.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 417-428
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.417
• Online since: January 2013
• Authors: Jing Jun Zhou, Chun Peng Dong, Qing Rui Xiang
• Keywords: Mixture Model, Natural Cavity, Two-Fluid Multiphase Flow Model, Ventilated Cavity, Volume of Fluid (VOF) Model

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