三维洪水流动的SPH数值模型

发布时间：2018-03-15 12:09

本文选题：光滑粒子动力学　切入点：自由液面　出处：《河海大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：对光滑粒子动力学(SPH)方法进行了改进,提出了高精度的耦合动力学边界处理方法,保证粒子的无穿透条件,通过液面粒子的支持域求和准确施加自由液面条件,准确预测水流的翻卷、破碎效应。建立洪水流动的简化模型,分析防波堤对洪水的阻碍作用,准确预测洪水流动中各种三维特征。应用SPH模型对三维圆柱形水体坍塌过程进行模拟,结果表明,SPH数值模拟结果与实验结果吻合很好,从而验证了SPH模型模拟剧烈自由液面流动的有效性。
[Abstract]:In this paper, the smooth particle dynamics (SPH) method is improved, and a high precision coupled dynamic boundary treatment method is proposed to guarantee the nonpenetrating condition of the particle. The free liquid level condition is accurately applied through the summation of the supporting region of the liquid surface particle. To accurately predict the effect of water flow rolling and breaking, to establish a simplified model of flood flow, and to analyze the blocking effect of breakwater on flood. The SPH model is used to simulate the collapse process of three-dimensional cylindrical water body. The results show that the numerical simulation results are in good agreement with the experimental results. The effectiveness of SPH model in simulating violent free surface flow is verified.
【作者单位】：重庆理工大学机械工程学院;
【基金】：国家自然科学基金(11602045) 重庆市基础科学与前沿技术研究项目(cstc2016jcyj A0373) 重庆市教育委员会科学技术研究项目(KJ1600918)
【分类号】：TV122

【相似文献】