水力旋流器湍流数值模拟及湍流结构  

Numerical Simulation of Turbulence and its Structure in Hydrocyclone

作　　者：褚良银[1] 陈文梅[1] 李晓钟[1] 杨柳 吴持恭[2] 

机构地区：[1]四川联合大学化工机械系,成都610065 [2]四川联合大学高速水力学国家重点实验室

出　　处：《高校化学工程学报》1999年第2期107-113,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：中国博士后科学基金;国家教委高等学校博士点专项科研基金

摘　　要：采用湍流代数应力模型对水力族流器内湍流场进行了数值模拟，数值计算结果验证了实测数据。用数值计算与实验研究相结合的方法深入揭示了旋流器内的湍流结构，结果表明，旋流器内湍动能分布呈两边高中间低的不对称鞍形;;湍动能耗散率分布与湍动能的分布有十分相似的现律;;溢流管端以下内旋流区域中湍流压力脉动强度以及压力相对脉动强度均很大。An Algebraic Stress Turbulence Model (ASM) was applied for the numericalsimulation of the strongly swirling turbulent flow in hydrocyclone, and the predicted results fit well withthe experimental data. The turbulence structure in the hydrocyclone was investigated by combiningnumerical simulations with experimental study. The results show that the radial distributions of theturbulent kinetic energy at different axial positions are similar to each other and can be characterized asunsymmetrical saddle-backed curves. The distribution of the turbulent kinetic energy dissipation rate issimilar to that of the turbulent kinetic energy. The absolute and relative pressure fluctuations are verylarge in the inner belieal flow and under the vortex finder.

关 键 词：水力旋流器 数值模拟 湍流结构 旋流器 

分 类 号：TQ051.8[化学工程]