MPS方法在细长河道中溃坝流动的应用研究

发布时间：2018-05-27 21:27

本文选题：MPS方法 + MLParticle-SJTU求解器　；参考：《江苏科技大学学报(自然科学版)》2017年05期

【摘要】：溃坝问题是我国防灾减灾工作中的一个突出问题.溃坝发生时,会对下游的结构物产生剧烈的砰击作用,并伴随着自由液面的翻卷、破碎等强非线性现象.对这种短时间的自由面强非线性变化,基于网格的计算流体方法往往需要一些特殊的数值处理.文中采用本课题组自主开发的无网格粒子法求解器MLParticle-SJTU对二维带斜坡、三维带90°急弯的溃坝问题进行了模拟.研究了溃坝流的自由面演化,分析了溃坝流遭遇斜坡障碍物的复杂流动现象,并记录下监测点的波高时间历程.通过MPS的数值模拟结果与试验数据进行对比,两者吻合较好.
[Abstract]:Dam break is a prominent problem in disaster prevention and mitigation in China. When the dam break occurs, it will produce severe slamming effect on the downstream structure, accompanied by strong nonlinear phenomena such as free liquid surface roll over and breakage. The mesh-based computational fluid method often requires some special numerical processing for the strong nonlinear variation of the free surface in a short time. In this paper, the meshless particle method solver (MLParticle-SJTU) developed by our team is used to simulate the dam-break problem with two and three dimensional slopes with 90 掳sharp bending. In this paper, the evolution of free surface of dam-break flow is studied, the complex flow phenomenon of dam-break flow against obstacles on slope is analyzed, and the time history of wave height at monitoring point is recorded. The numerical simulation results of MPS are in good agreement with the experimental data.
【作者单位】：上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室;高新船舶与深海开发装备协同创新中心;
【基金】：国家自然科学基金资助项目(51379125,51490675,11432009,51579145) 长江学者奖励计划基金资助项目(T2014099) 上海高校东方学者特聘教授岗位跟踪计划基金资助项目(2013022) 上海市优秀学术带头人计划基金资助项目(17XD1402300) 上海市船舶工程重点实验室基金资助项目(K2015-11) 工信部数值水池创新专项VIV/VIM基金资助项目(2016-23/09)
【分类号】：TV122.4;TV87

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