Abstract
Based on a suite of computational fluid dynamics code, the pulsation characteristics are studied for turbulent supercavitating flows over a 2D base-vented symmetric hydrofoil using a pressure-based Navier-Stokes solver coupled with a phase mass fraction transport cavitation model and local linear low-Reynolds-number κ-ɛ turbulence model. It is found that there exists a critical air supply flow under certain inflow condition. When the gas supply flow exceeds the critical value, the cavity begins to pulsate. Pulsating cavity has a visually wavy surface, and air leakage shows as a mass of air-water mixture detaching from the rear part of the cavity periodically.
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Foundation item: the National Natural Science Foundation of China (No: 10832007) and the Shanghai Leading Academic Discipline Project (No. B206)
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Guo, Jh., Lu, Cj. Pulsation characteristics of ventilated supercavitation on a 2D hydrofoil. J. Shanghai Jiaotong Univ. (Sci.) 15, 423–427 (2010). https://doi.org/10.1007/s12204-010-1027-x
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DOI: https://doi.org/10.1007/s12204-010-1027-x