全非线性波的高阶谱方法  

High-Level Spectral Method for the Fully Nonlinear Waves

作　　者：Jang Kim Sewan Park Zhirong Shen Johyun Kyoung Aldric Baquet Hyungtae Lee Yoon-Jin Ha Ji-Yong Park Kyong-Hwan Kim 

机构地区：[1]Front Energies,Houston,TX,77084,USA [2]Korean Research Institute of Ships&Ocean Engineering,Daejeon 34103,Korea

出　　处：《哈尔滨工程大学学报（英文版）》2023年第1期115-127,共13页Journal of Marine Science and Application

基　　金：the R&D Project of“Development of core technology for offshore green hydrogen to realize a carbon-neutral society”by the Korea Research Institute of Ships and Ocean Engineering(PES4360).

摘　　要：Efficient generation of an accurate numerical wave is an essential part of the Numerical Wave Basin that simulates the interaction of floating structures with extreme waves.computational fluid dynamics(CFD)is used to model the complex free-surface flow around the floating structure.To minimize CFD domain that requires intensive computing resources,fully developed nonlinear waves are simulated in a large domain that covers far field by more efficient potential flow model and then coupled with the CFD solution nearfield.Several numerical models have been proposed for the potential flow model.the higher-level spectral(HLS)method presented in this paper is the extended version of HLS model for deep water recently been derived by combining efficiency and robustness of the two existing numerical models–Higher-Order Spectral method and Irrotational Green-Naghdi model(Kim et al.2022).The HLS model is extended for the application of finite-depth of water considering interaction with background current.The verification of the HLS model for finite depth is made by checking the qualification criteria of the generated random waves for a wind-farm application in the Dong-Hae Sea of Korea.A selected wave event that represents P90 crest height is coupled to a CFD-based numerical wave tank for the future air-gap analysis of a floating wind turbine.

关 键 词：Fully nonlinear wave Higher-level spectral Computational fluid dynamics Numerical wave tank Wind-farm Air-gap 

分 类 号：TV139.2[水利工程—水力学及河流动力学] P731.22[天文地球—海洋科学]