Implicit large eddy simulation of unsteady cloud cavitation around a plane- convex hydrofoil

• Published in: Journal of hydrodynamics. Series B Vol. 27; no. 6; pp. 815 - 823
• Main Authors: HIDALGO, Victor, LUO, Xian-wu, ESCALER, Xavier, JI, Bin, AGUINAGA, Alvaro
• Format: Journal Article Publication
• Language: English
• Published: Singapore Elsevier Ltd 01.12.2015; Springer Singapore; CDIF, Universitat Politècnica de Catalunya, Barcelona, Spain%School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China%Mechanical Engineering Department, Escuela Politecnica Nacional University, Quito, Ecuador
• Subjects: Cavitació; Cavitation; Engineering; Engineering Fluid Dynamics; Enginyeria mecànica; Fluid mechanics; Hydrology/Water Resources; implicit large eddy simulation (ILES); Mecànica de fluids; Numerical and Computational Physics; OpenFOAM; Q-criterion; Simulation; unsteady partial cavitation; Zwart-Gerber-Belamri cavitation model; Àrees temàtiques de la UPC; 大涡模拟; 平面; 水动力条件; 空化; 翼型; 腐蚀行为; 隐式; 非稳态; OpenFOAM; Zwart-Gerber-Belamri cavitation model; Q-criterion; unsteady partial cavitation; implicit large eddy simulation (ILES); criterion
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(15)60544-3

The present paper focuses on the erosive cavitation behavior around a plane convex hydrofoil. The Zwart-Gerber-Belamri cavitation model is implemented in a library form to be used with the OpenFOAM. The implicit large eddy simulation （ILES） is app- lied to analyze the three-dimensional unsteady cavitating flow around a plane convex hydrofoil. The numerical results in the cases under the hydrodynamic conditions, which were experimentally tested at the high speed cavitation tunnel of the l~cole Polytechnique F6d＆ale de Lausanne （EPFL）, clearly show the sheet cavitation development, the shedding and the collapse of vapor clouds. It is noted that the cavitation evolutions including the maximum vapor length, the detachment and the oscillation frequency, are captured fairly well. Furthermore, the pressure pulses due to the cavitation development as well as the complex vortex structures are reasona- bly well predicted. Consequently, it may be concluded that the present numerical method can be used to investigate the unsteady cavitation around hydrofoils with a satisfactory accuracy.