Comparative study of RANS and LES simulation methods for analysis of turbulence in a tubular stirred reactor
Selecting a right simulation method is important for accurately predicting flow field in stirred reactor.The Reynolds-Averaged Navier-Stokes (RANS) approach with standard k-ε model and large eddy simulations (LES) method were both used to analyze the turbulent flow field in a tubular stirred reactor for leaching.Calculations were performed to study the effects of agitator speed and flux on the turbulent flow field.The velocity at different axial sections gained by the two methods was compared.Results showed that the eddy current,especially in the back of impellor,predicted by LES was better than that by standard k-ε model.At the same time,the average relative error of the mean residence time and the mixing time of the former reduced 5% and 13% respectively than that of the latter.
Keyword Flow field Mean residence time Mixing time Numerical simulation
ZHAO Qiuyue ZHANG Tinglan LIU Yan CAO Xiaochang WANG Shuchan ZHAO Hongliang
School of Materials and Metallurgy , Northeastern University, Shenyang, 110004 ,China
国际会议
杭州
英文
218-222
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）