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内孤立波对密度层化水体的水动力及分层特性具有显著影响。为揭示内孤立波特性,建立了规则地形下可有效模拟弱非线性内孤立波的分层流三维数值波浪水槽,研究了内孤立波在规则地形条件下的传播,成功捕捉到了水体表面存在的辐聚流和辐散流,探讨了内孤立波传播过程中流速、紊动能和紊动能耗散率的分布与演化特性,为进一步利用数值波浪水槽研究内孤立波能量特性分布、改善层化水体的水生态环境提供了可靠的方法与手段。
Internal solitary waves have a significant effect on the hydrodynamics and stratification of densified waters. In order to reveal the characteristics of internal solitary waves, a three-dimensional stratified flow numerical wave tank, which can effectively simulate weakly nonlinear internal solitary waves under regular terrain, is established. The propagation of internal solitary wave under regular terrain conditions is studied and the surface of water body is successfully captured , The distribution and evolution characteristics of flow rate, turbulence energy and turbulent energy dissipation rate in internal solitary wave propagation are discussed. In order to further study the distribution of energy characteristics of internal solitary waves in numerical wave flume and improve the stratification Water ecological environment provides a reliable method and means.