Compressible effect on the cavitating flow： A numeric study

• Published in: Journal of hydrodynamics. Series B Vol. 29; no. 6; pp. 1089 - 1092
• Main Author: 张伟;柏晓东;马峥;陈刚;Yong Wang
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01-12-2017; Springer Singapore; Science and Technology on Water Jet Propulsion Laboratory, Marine Design and Research Institute of China, Shanghai 200011, China%Ministry of Education Key Laboratory of Structural Dynamic Behavior and Control, School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China%China Ship Scientific Research Center, Wuxi 214082, China%Max Planck Institute for Dynamics and Self-Organization, Am Fa(β)berg 17, G（o）ttingen 37077, Germany
• Subjects: barotropic flow; Cavitation; compressibility; Engineering; Engineering Fluid Dynamics; Hydrology/Water Resources; Letter; Numerical and Computational Physics; Simulation; 可压缩;流动;混合物;数字模拟;不稳定;解压缩;冒泡;模特儿; compressibility; barotropic flow; Cavitation
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(16)60823-5

To understand the effect of the compressibility on the cavitating flow, a compressible, multiphase, single component Reynolds averaged Navier-Stokes (RANS) solver is used to study the cavitating flow on a wedge in the present work. A barotropic equation of status is used. A non-linear model for compressibility in the mixture is adopted to capture the effect of the compressibility within the complex cavitation bubbly mixtures. An unsteady cavitation phenomenon is found in the numerical simulation. The numerical results of local compressibility and Mach number in the bubbly mixture are given. The mechanism responsible for the unsteady shedding of the bubbly mixture is discussed based on the numerical results.