Large Eddy Simulation of Water Flow over Series of Dunes
Large eddy simulation is used to investigate the spatial development of open channel flow over a train of twelve dunes. The three dimensional filtered N-S equations are numerically solved by fractional-step method in sigma-coordinate. The subgrid turbulent stress is modeled by a dynamic coherent eddy model proposed by the authors. The computed velocity profiles are in good agreement to the available experimental results. The mean velocity and the turbulent Reynolds stresses and so on affected by a series of dune shaped structures on are compared and analyzed. The variations of turbulence statistics along the flow affected by the wavy bottom roughness have been studied.
Jun Lu Lingling Wang Hai Zhu Zhenzhen Yu
The College of Water Conservancy and Hydropower, Hohai University, Nanjing, 210098
国际会议
南京
英文
690-696
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）