不同浸没深度的方形结构物流固耦合作用数值研究  

A Numerical Study of Wave-Structure Interactions for a Square Structure with Different Submerged Depths

作　　者：邓小康 李达 郭建廷[2] 武旭 李辉 DENG Xiao-kang;LI Da;GUO Jian-ting;WU Xu;LI Hui(General Research Institute,China National Offshore Oil Corporation,Beijing 100028,China;School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]江苏科技大学,江苏镇江212003

出　　处：《船舶力学》2023年第12期1753-1767,共15页Journal of Ship Mechanics

基　　金：国家重点研发计划项目(2016YFC0303601)。

摘　　要：本文通过求解URANS方程和SST湍流模型来研究不同浸没深度的方形结构物流固耦合作用。首先通过开展一系列关于部分浸没的圆形结构物的数值算例来验证当前数值模型的正确性。通过对比当前数值结果与已发表的试验数据,证明当前数值模型能够准确地模拟结构物在波浪中的水动力性能。共研究5个模拟算例,其中的方形结构物浸没深度从-1D到0.9D,关注对象为作用在方形结构物上的垂直波浪力和结构物周边的自由液面升高以及漩涡。结果表明:结构物的浸没深度对其水动力性能有着重要的影响;当结构物位于静水面以上时,在很短时间内会发生较大的波浪抨击力。The wave-structure interactions for a square structure with different submerged depths are studied numerically by solving URANS equations together with the k-ωSST turbulence model.The present numerical model is validated firstly by carrying out a series of simulation cases for a partially-submerged circular structure.It is proved that the present numerical model is able to simulate the hy‐drodynamic performances of the structures in waves reasonably well by comparing the present numeri‐cal results with the published experimental data.There are five simulation cases in which the sub‐merged depth of the square structure varies from-1D to 0.9D in the present study with focus on the vertical wave force,and the free surface elevations and vorticity in the vicinity of the square structure.The results demonstrate that the submerged depth of the structure plays an important role in its hydro‐dynamic behaviors and that a larger wave impact force occurs in a very short time when the structure is located over the still water level.

关 键 词：流固耦合作用 URANS k-ωSST 自由液面升高 波浪力 漩涡 

分 类 号：O35[理学—流体力学]