FSI simulation of dynamics of fish passing through a tubular turbine based on the immersed boundary-lattice Boltzmann coupling scheme  

作　　者：Ze-hao Huang Yong-guang Cheng Jia-yang Wu Wei Diao Wen-xin Huai 

机构地区：[1]State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,430072,China [2]Changjiang Institute of Survey,Planning,Design and Research,Wuhan,430010,China [3]School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing,400016,China

出　　处：《Journal of Hydrodynamics》2022年第1期135-147,共13页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51839008,51579187 and 11172219);supported by the Research Fund for the Doctoral Program of Higher Education of China(Grant No.20130141110013).

摘　　要：The anadromous fish can pass through turbines of run-of-the-river hydropower stations to reach the downstream watershed, but their mortality is significant because of the complex turbine structure, the fast-rotating runner, and the special flow patterns. Numerical simulations of the dynamics of fish passing are a challenging task, because the fish motion in the turbines involves a strong fluid-structure interaction (FSI). In this paper, the 3-D immersed boundary-lattice Boltzmann (IB-LB) coupling scheme is proposed to treat the FSI between the water and the fish. The process of one fish and three fish passing through a tubular turbine is simulated on a graphics processing unit (GPU) platform. The fish motion postures (translation and rotation), the fish body pressure distributions and histories are analyzed, and the results are consistent with the previous studies. This paper presents the IB-LB models, the simulation procedures, the specific treatments, and related results, to demonstrate the effectiveness of the IB-LB coupling scheme in simulating FSI problems and its application prospects in developing fish-friendly turbines.

关 键 词：Fluid-structure interaction(FSI) immersed boundary method lattice Boltzmann method tubular turbine fish passing dynamics 3-D simulation 

分 类 号：TV131.2[水利工程—水力学及河流动力学]