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Large Eddy Simulation of Unsteady Cloud Cavitation Flow Around Underwater Hydrofoil


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Large Eddy Simulation of Unsteady Cloud Cavitation Flow Around Underwater Hydrofoil
ZHANG Mu1TAN Jun-jie1YI Wen-jun2CHEN Zhi-hua2CAI Xiao-wei1
1.School of Energy and Power Engineering; 2.National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China
cavitation large eddg simulation volume of fluid method hydrofoil unsteady flow
Adopting the N-S equations,the pressure implicit split operator,the large eddg simulation turbulence model and the volume of fluid method,the characteristics of the unsteady cloud cavitation flow around the NACA0015 hydrofoil are researched in consideration of the gas-liquid phase transition.The periodic shedding process including the initial vortex,the re-entrant jet vortex,the cavity shedding and the cavity regeneration is analysed.The Strouhal number St,the dimensionless cavity length and the hydrodynamic coefficients of different cavitation numbers are calculated.The calculation agrees with the experimental results.The Kunz model and Sauer model are used to simulate the cavity shape.The results show that the two cavitation models can be well used for the cloud cavitation flow.


[1] 易文俊,李月洁,王中原,等. 小攻角下水下高速射弹的空泡形态特性[J]. 南京理工大学学报,2008, 32( 4) : 464-467.
[2] Gong Bozhi,Zhang Bingjian,Zhang Hui. NEMD study for supercavitation mechanism with underwater object [J]. Physics Letters A, 2008, 372( 47) : 7063-7067.
[3] Farouk M,Nayfeh H. A compressible multi-phase flow solver for the computation of the supercavitation over high-speed Torpedo[R]. AIAA, 2002, 14( 17) : 1-14.
[4] Kubota A,Kato H,Maeda M,et al. Unsteady strcuture measurement of cloud cavitation on a foil section using conditional sampling technique[J]. Journal of Fluids Engineering, 1989, 111( 2) , 204-210.
[5] Lee J. A potential based panel method for the analysis of marine propellers in steady flow[D]. Massachusetts, USA: Department of Ocean Engineering,Massachusettes Institute of Technology, 1987.
[6] Sarraf C,Jaouen R,Djeridi H,et al. Investigation of thickness effects on 2D NACA symmetric foils[A]. Oceans [C]. France: IEEE, 2005: 1298-1303.[7] 季斌,洪方文,彭晓星. 二维水翼局部空泡脱落特性数值分析[J]. 水动力研究与进展, 2008, 23( 4) : 412-418.
[8] Robert F K,David A B,David R S. A preconditioned Navier Stokes method for two-phase flows with application to cavitation prediction [J]. Computers and Fluids, 2000, 29( 8) : 849-875.
[9] Neaves M D,Edwards J R. All-speed time-accurate underwater projectile calculations using a preconditioning algorithm[J]. ASME, 2006, 128( 3) : 284-296.[10] Marina O. Numerical investigation on the cavitating flow in a water jet pump[D]. Goteborg,Sweden: Department of Applied Mechanics,Chalmers University of Technology, 2008.
[11] Delale C F,Schnerr G H,Sauer J. Quasi-onedimensional steady-state cavitating nozzle flows[J]. Journal of Fluid Mechanics, 2001, 427( 4) : 167-204.[12] Yakushiji R,Yamaguchi H,KawamuraT,et al. Investigation for unsteady cavitation and re-entrant jet on a foil section[J]. Journal of the Society of Naval Architects of Japan, 2001, 190( 2) : 61-74.
[13] Kjeldsen M,Roger E A,Effertz M. Spectral characteristics of sheet /cloud cavitation[J]. Journal of Fluids Engineering, 2000, 122( 3) , 481-487.
[14] Berntsen S,Kjeldsen M,Roger E A. Numerical modeling of sheet and tip vortex cavitation with fluent 5 [EB/OL]. http: / /cav2001. library. caltech. edu /167 / 00 /cav2001_B5006. pdf.
[15] Huuva T,Cure A,Bark G, et al. Computations of unsteady cavitation flow on wing profiles using a volume fraction method and mass transfer models[Z]. Romania: National Authority for Science Research, 2007.
[16] Amromin E,Kopriva J,Roger E A, et al. Hydrofoil drag reduction by partial cavitation[J]. Journal of Fluids Engineering, 2006, 128( 10) , 931-936.


Last Update: 2012-10-12