Vortex tuning of a submarine by Liutex force field model

查看全文 作　　者：Liu-shuai [1]Cao;Song-tao [1]Chen;De-cheng [1,2]Wan;Yi-qian [3]Wang

机构地区：[1]Computational Marine Hydrodynamics Lab(CMHL),School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai,200240,China;[2]Ocean College,Zhejiang University,Zhoushan,316021,China;[3]School of Mathematical Science,Soochow University,Suzhou,215006,China

出　　处：《Journal of Hydrodynamics》索引2021年第33卷第3期,共7页

基　　金：Projects supported by the National Natural Science Foundation of China(Grant Nos.52001210,51879159);the National Key Research and Development Program of China(Grant Nos.2019YFB1704200,2019YFC0312400);This work was supported by the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University(Grant No.SL2020PT104). 摘　　要：Vortical structures of a submarine with appendages are fully turbulent and complex.Thus,flow control and vortex manipulation are of great importance for the hydrodynamic performance and acoustic characteristics.Take the generic submarine model DARPA Suboff as the test case,a vortex tuning method based on the Liutex force field is proposed to manipulate the vorticity field.Viscous flow past the submarine model in straight-line motion at a Reynolds number of 1.2×107 is achieved by solving the Reynolds averaged Navier-Stokes(RANS)equations.Multi-block structured mesh topology is used to discretize the computational domain,and the shear stress transport(SST)k-ωturbulence model is implemented to close the equations.The control of vortex is achieved by introducing additional source terms based on Liutex vortex definition and identification system to the RANS equations.The resistance acting on the submarine,flow field as well as the vortical structures are compared and analyzed.Results show that Liutex force model can effectively reduce the resistance by 9.31%and change the vortical structures apparently. 关键词：Vortex tuning vortical structures SUBMARINE vortex identification Liutex force field model

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Vortex tuning of a submarine by Liutex force field model

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