基于CEL方法的带结构物溃坝流数值模拟
Numerical simulation of dam-break flow with obstacle based on CEL
投稿时间:2023-04-19  修订日期:2023-11-09
DOI:
中文关键词:  溃坝流  计算流体力学  欧拉有限元方法  数值模拟  流固耦合
英文关键词:Dam-break flow  Computational Fluid Dynamics  Coupled Eulerian Lagrangian Analysis  Numerical simulation  Fluid-Structure Interaction
基金项目:
作者单位邮编
马洪玉 新疆水利水电勘测设计研究院有限责任公司 830000
李敬军* 中国水利水电科学研究院 100048
朱凯斌 中国水利水电科学研究院 
赵艺颖 中国水利水电科学研究院 
杨正权 中国水利水电科学研究院 
摘要点击次数: 169
全文下载次数: 0
中文摘要:
      随着全球气温的不断升高,极端天气现象频发,其中溃坝现象成为水工结构方向需要重点防范的自然灾害,同时,溃坝流的发展会对下游结构物产生巨大的破坏作用,因此深入探究溃坝流现象的水动力学特性以及溃坝流下游结构物所受到的冲击力影响势在必行。本文针对带有结构物的溃坝流动问题现象,采用CEL方法(Coupled Eulerian-Lagrangian analysis,耦合欧拉-拉格朗日方法),对于溃坝流的发展、演化进行了数值模拟。首先通过模拟文献已有实验工况,通过对比溃坝流自由表面及流体尖端时程变化验证了本文CEL方法在溃坝流应用中的准确性和精度。在此基础上,针对 结构物材料性能、高度及位置设置了不同的计算工况,模拟了不同工况下溃坝流的运动状态以及结构物的受力变形状态,分析了上述因素对于溃坝流的影响规律。
英文摘要:
      Dam-break flow is a catastrophic and complex flow phenomenon in hydraulics. Aiming at the phenomenon of dam-break flow with obstacles, the CEL (Coupled Eulerian Lagrangian Analysis) method was used to numerically simulate the development and evolution of dam-break flow. Firstly, the accuracy of the CEL method in the application of dam-break flow are verified by simulating and comparing existing experimental conditions. On this basis, different calculation conditions were set for the material performance, the height, and the position of the obstacle. The movement state of the dam-break flow and the stress deformation state of the barrier under different conditions were simulated, and the influence of the above factors on the dam-break flow was analyzed.
  查看/发表评论  下载PDF阅读器
关闭