A numerical study of steady and unsteady cavitation on a 2d hydrofoil

作者：Li Zi ru^*; Pourquie Mathieu; Van Terwisga Tom J C

来源：Journal of Hydrodynamics, 2010, 22(5): 728-735.

DOI：10.1016/S1001-6058(10)60029-7

• NACA0015
• modified SST k-omega model
• shedding
• re-entrant jet
• erosion risk

The steady and unsteady cavitation phenomena on a 2D NACA0015 hydrofoil predicted by the multiphase RANS code FLUENT are studied in this paper. Besides a numerical sensitivity study of the noncavitating condition, the present investigation focuses on two cavitation numbers: sigma = 1.6 (steady cavitating flow) and sigma = 1.0 (with dynamic shedding). With a modified SST k - omega turbulence model, a periodic shedding is revealed: the main sheet cavity breaks up by the re- entrant jet and a cloudy cavity forms and is convected with the downstream flow. Finally, the experience with FLUENT has been used to discuss the general ability of multiphase RANS codes to predict the cavitation erosion risk.

• 出版日期2010-10