Numerical study on the effects of progressive gravity waves on turbulence

查看全文 作　　者：Anqing(Elliott) [1]XUAN;Bingqing [1]DENG;Tao [1]CAO;Lian [1]SHEN 机构地区：[1]Department of Mechanical Engineering and Saint Anthony Falls Laboratory, University of Minnesota 出　　处：《Journal of Hydrodynamics》索引2016年第28卷第6期,共7页 基　　金：supported by the NSF (Grant Nos. 1341062, 1341063 and 1605080);the ONR CASPER MURI project 摘　　要：The wind-wave-ocean system, which contains complex interactive processes, is of great importance for the momentum, heat and mass transport in the atmosphere and ocean and at their interface. In this work, we perform wave-coupled phase-resolved numerical simulations to investigate the effect of progressive gravity waves on wind and ocean turbulence. Initially homogeneous turbulence under a finite-amplitude monochromatic surface wave is simulated to reveal how the wave influences the subsurface turbulence. For the interaction between wind-driven waves and shear turbulence in the ocean, new wave-phase-resolved simulation approaches are developed to capture Langmuir cells. Lastly, wind turbulence over one and two progressive waves is simulated to elucidate the dynamics of turbulence coherent structures impacted by surface waves for improved understanding of wind-wave growth mechanism. 关 键 词：湍流模拟 重力波 数值研究 湍流相干结构 相互作用 物质输运 数值模拟 有限振幅