Numerical Investigation of Dam Beak Flows over A Wet Bed
The observation of dam break flows over a wet bed is numerically considered in this paper.The dam break flow process is modelled by a sudden gate release.A Constrained Interpolation Profile (CIP)-based model is employed to solve the Navier-Stokes equations with free surface boundary condition to deal with the water-air-gate interactions.The movable gate is simulated by an immersed boundary, and a gate motion formula is derived from existing experimental data and applied in the dam break flow computations.In order to trace motion of reservoir water and downstream water, a two-liquid-phase model based on the VOF-typed THINC/SW method is used to capture the free surface.The difference between the water profiles with/without gate motion is examined.The numerical results show that the proposed gate motion formula correlates well with the numerical modelling, and the gate motion has a significant influence in the water collapse process and cannot be neglected in the study of dam break.
dam break flow gate motion sudden removal CIP method two-liquid-phase model immersed boundary method
YE Zhouteng CHENG Du ZHAO Xizeng
Ocean College, Zhejiang University, Hangzhou 340058, China Ocean College, Zhejiang University, Hangzhou 340058, China;State Key Laboratory of Hydrology-Water R
国内会议
南宁
英文
566-571
2015-11-01（万方平台首次上网日期，不代表论文的发表时间）