平流沉淀池紊流流场的数值模拟  

NUMERICAL SIMULATION OF TURBULENT FLOW FIELD ON THE HORIZONTAL SEDIMENTATION TANK

作　　者：杨玲霞[1] 郭佩佩[1] 范如琴[1] 

机构地区：[1]郑州大学环水学院,河南郑州450002

出　　处：《环境工程》2008年第4期87-88,93,共3页Environmental Engineering

摘　　要：对平流沉淀池的紊流流场在不同边界条件下进行模拟计算,分析比较边界条件的简化程度对平流沉淀池模拟计算的影响。结果表明,平流沉淀池入口处进流条件的简化和污泥斗的忽略与否对平流沉淀池流态的计算结果影响较大,在实际计算中应尽量采用真实的边界条件进行计算。以真实边界条件计算,分析表明,紊流场模拟的流态比层流场模拟更符合实际平流沉淀池的流场情况。It is simulated and calculated the turbulent flow field of the horizontal sedimentation tank on the different boundary conditions,and then analysed and compared the effect of the extent of boundary condition's simplicity on the horizontal sedimentation tank. The results have revealed that the simplicity of the inlet conditions and the ignore of the mud hopper have obviously influence on the result of the flow pattern on the simulation results of the horizontal sedimentation tank. The calculation shows that adopting the actual boundary condition not the simplified boundary conditions as far as possible can realize in the practical calculations. In the end,it is simulated and calculated the laminar flow field of the horizontal sedimentation tank on the actual boundary conditions,which is then compared with that of the turbulent flow field. The result shows that the simulation of the flow pattern of the turbulent flow is better than the laminar flow,and the former is more compliable with that of a real horizontal sedimentation tank.

关 键 词：平流沉淀池 数值模拟 层流 紊流 

分 类 号：TU991.23[建筑科学—市政工程]