摘要 A finite volume, multiphase solver in the framework of OpenFOAM is used to calculate the flow field of the cavitating flow over the Clark-Y hydrofoil. This solver uses Transport Based Equation Model (TEM) to solve the liquid volume fraction, and utilizes volume of fluid (VOF) technique to predict the interface between liquid and vapor phases. The simulation is designed to study the cavitation shedding and different fluid characteristics in the cloud cavitation regime when adopting two different Large Eddy Simulation (LES) models, namely, one equation eddy viscosity (oneEqEddy) model and Smagorinsky model. It is shown that these two models can be used to study the cavitation shedding dynamics and predict the velocity profiles.
ZHU Ziming, QIAN Zhongdong, GUO Zhiwei, YANG Bing. Numerical simulation of cavitation around a Clark-Y hydrofoil with different LES models in OpenFOAM[J]. 排灌机械工程学报, 2018, 36(4): 277-282.
[1]FRANC J P, MICHEL J M. Fundamentals of cavitation[M]. Netherlands:Springer, 2005.
[2]ROOHI E, ZAHIRI A P, PASSANDIDEH-FARD M. Numerical simulation of cavitation around a twodimensional hydrofoil using VOF method and LES turbulence model[J]. Applied mathematical modelling, 2013, 37(9):6469-6488.
[3]JI B, LUO X W, ARNDT R E A, et al. Large eddy simulation and theoretical investigations of the transient cavitating vortical flow structure around a NACA66 hydrofoil[J]. International journal of multiphase flow, 2015, 68(68):121-134.
[4]SAUER J. Instationaren kaviterendeStromung — Ein neues Modell, baserend auf Front Capturing (VOF) and Blasendynamik[D]. Karlsruhe: Karlsruhe Universitat, 2000.
[5]MERKLE C L, FENG J, BUELOW P E O. Computational modeling of the dynamics of sheet cavitation[C]//Third International Symposium on Cavitation, Grenoble, France, 1998.
[6]KUNZ R F, BOGER D A, STINEBRING D R, et al. A preconditioned Navier-Stokes method for twophase flows with application to cavitation prediction[J]. Computers & fluids, 2000, 29(8):849-875.
[7]HIRT C W, NICHOLS B D. Volume of fluid (VOF) method for the dynamics of free boundaries[J]. Journal of computational physics, 1981, 39(1):201-225.
[8]PENG X X, JI B, CAO Y, et al. Combined experimental observation and numerical simulation of the cloud cavitation with Utype flow structures on hydrofoils[J]. International journal of multiphase flow, 2016, 79:10-22.
[9]BENSOW R E, BARK G. Simulating cavitating flows with LES in openFOAM[C]//Proceedings of Computational Fluid Dynamics, Lisbon, Portugal, 2010:14-17.
[10]WANG G, SENOCAK I, WEI S, et al. Dynamics of attached turbulent cavitating flows[J]. Progress in aerospace sciences, 2001, 37(6):551-581.
[11]HUANG B, WANG G Y. Partially averaged Navier-Stokes method for timedependent turbulent cavitating flows[J]. J. Hydrodyn, 2011, 23(1):26-33.
[12]JOHAN Meyers, MARTINE Baelmans. Determination of subfilter energy in largeeddy simulations[J]. Journal of turbulence, 2004, 527(5):1468-5248.
[13]ASNAGHI A. Interphase change foam tutorial and PANS turbulence model[D]. Chalmers: Chalmers University of Technology, 2013.
[14]BIN J I, LUO X W, PENG X X, et al. Numerical investigation of the ventilated cavitating flow around an underwater vehicle based on a threecomponent cavitation model[J]. J. Hydrodyn. Ser.B, 2010, 22(6):753-759.
[15]FUREBY C. On the justification and extension of mixed models in LES[J]. Journal of turbulence, 2007, 8(8):1-17.