Numerical study on cavitating flow due to a hydrofoil near a free surface

Journal of Ocean Engineering and Science

卷:1

Ping-Chen Wu¹  Jiahn-Horng Chen² 

[1] Department of Naval Architecture and Ocean Engineering, Osaka University, Osaka, Japan;

[2] Department of Systems Engineering and Naval Architecture, National Taiwan Ocean University, Keelung, Taibei, China;

关键词: Cavitation;    Viscous flow;    Free surface;    2-D hydrofoil;    Two-phase flow;   

DOI  :  10.1016/j.joes.2016.02.002

来源: DOAJ

【 摘 要 】

A numerical strategy is proposed for a viscous uniform flow past a 2-D partially cavitating hydrofoil placed at a finite depth from the free surface. The flow was modeled by the Reynolds-averaged Navier–Stokes (RANS) equations. A finite-volume method with the SIMPLE scheme and k-ε turbulence model were employed for computations. The “full cavitation model,” which included the effects of vaporization, noncondensible gases and compressibility, was incorporated in the computation of cavitating flow. The cavity shape and free surface were updated iteratively till a reasonable convergence was reached. As for the determination of the free surface, the VOF approach was adopted. The test cases show the accuracy and stability of our procedure to capture the cavitating flow near the free surface.

【 授权许可】

Unknown