摘要
溃坝是一种自然灾害,且时常发生,溃坝时大量的水从缺口溢出,会对周围造成很大的影响。坝体的形状是引起溃坝的主要影响因素之一,当来流作用在坝体上之后,由于坝体形状的不同,其溃坝之后所导致的流体冲击距离与力度也不一样。为此,利用VOF模型,用界面跟踪法求解相连续方程,对矩形与曲形坝体溃坝问题进行数值模拟,并对两种形状坝体溃坝后的水位图进行分析,通过数值计算得到了各个时刻溃坝运动界面的变化和相应的速度分布。最后得出结论,矩形坝体相对于曲线形坝体较好。
Dam break is a kind of frequent natural disaster, and there is a large amount of water overflows from the gap when the darn breaks, and it will have a great impact on the surrounding. The shape is one of the main influencing factors of dam break, when the incoming flow acts on the dam body, due to the different shape of the dam, the damper caused by the impact of the distance and the intensity of the fluid is not the same. This article used the VOF model in solving continuous equations by interface tracking method, numerical simulation of dam break problem for rectangular dam and curved dam. The water level maps of two types of dams were analyzed, and simulation results focused on the evolution of the moving interface and the contour of the velocity of the dam break at different moment. Finally, it is concluded that the rectangular dam is better than the curved dam.
出处
《重庆理工大学学报（自然科学）》
CAS
2017年第4期76-81,共6页
Journal of Chongqing University of Technology：Natural Science
基金
安徽省自然科学基金资助项目(1508085QE100)
