摘要
为优化旋风分离器设计,将改进了Reynolds应力方程压力应变项的产生项和对流项的各向同性化模型与壁面效应模型结合,加入到FLUENT6.0软件平台上,对蜗壳式旋风分离器内三维强旋湍流流动进行了数值模拟。结果表明:在分离空间和灰斗内,预报值与实测值吻合较好,表明数值模拟的合理性;在环形空间内预报值也与实测值接近,流动有明显的非轴对称性;在排气管内预报值与实测值一致性较差,表明湍流模型尚有待改进。
The three-dimensional strongly swirling turbulent flow in a cyclone separator with a volute inlet was simulated to optimize the design by improving the pressure-strain generation and convection terms isotropization of production and convection +wall reflection model of the Reynolds stress equation in FLUENT 6.0. Good agreement was obtained between the predictions and experiments in the separation space and the dust hopper. The annular space prediction results were close to the measurements, with both showing non-axi-symmetric flows. In the vortex finder the agreement between predictions and measurements is poor, indicating that the turbulence model still needs further improvement.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第11期1501-1504,1508,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家"九七三"重点基础研究项目(G-1999-0222-07)
关键词
旋风分离器
湍流流动
数值模拟
cyclone separator
turbulent flows
numerical simulation
