超大型结构物受波浪力作用的数值模拟

发布时间：2018-06-02 11:15

本文选题：超大型结构物 + 大涡模拟　；参考：《工程力学》2014年08期

【摘要】：为了计算波浪效应下超大型结构物所受的波浪力,该文运用σ坐标变换来追踪随时间变化的自由液面,添加了浸没边界法(IBM)来处理不规则结构物表面,建立了基于大涡模拟(LES)方法的三维数值模型。为验证该数值模型的正确定,运用该模型来模拟规则波作用下大直径垂直圆柱的绕射问题,圆柱周围的波浪爬高数值解与解析解吻合良好。运用该三维数值模型,模拟了波浪与南京长江三桥南塔钢套箱相互作用的问题,数值计算出的结构物所受的波浪力与试验数据吻合良好,表明该数值模型能够很好地模拟工程中三维波浪与超大型结构物相互作用的问题。
[Abstract]:In order to calculate the wave force on superlarge structures under wave effect, a 蟽 coordinate transformation is used to track the free liquid surface with time change, and the immersion boundary method (IBM) is added to deal with the irregular structure surface. A three-dimensional numerical model based on large eddy simulation (les) method is established. In order to verify the positive determination of the numerical model, this model is used to simulate the diffraction problem of a large diameter vertical cylinder under the action of regular waves. The numerical solution of wave climbing around the cylinder is in good agreement with the analytical solution. Using the three-dimensional numerical model, the interaction between waves and the steel jacket box of the south tower of Nanjing Yangtze River third Bridge is simulated. The calculated wave force of the structure is in good agreement with the experimental data. It is shown that the numerical model can well simulate the interaction between three-dimensional waves and super-large structures in engineering.
【作者单位】：西南交通大学土木工程学院;
【基金】：国家自然科学基金项目(51178397) 国家科技支撑计划项目(2012BAG05B00)
【分类号】：TU311.3

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