【摘要】 本文采用RSM湍流模型对不同尺寸参数的旋风分离器气固两相流场进行数值模拟,基于响应曲面法建立旋风分离器的欧拉数和分割粒径的预测模型。结果表明:排气管直径对欧拉数及分割粒径的影响极其显著,随着排气管直径的增大,欧拉数先迅速减小后缓慢增大,分割粒径增大。入口高度和入口宽度对欧拉数及分割粒径的影响极其显著,随着入口高度和入口宽度的增大,欧拉数增大,分割粒径增大。总高对分割粒径的影响显著,随着总高的增大,分割粒径减小。优化模型相比于Stairmand基准模型,欧拉数降低58%,分割粒径降低41%。更多还原

【Abstract】 Numerical study on gas-solid flow field in the cyclone separator with different geometrical parameters was carried by using unsteady RSM model. The predictive models of the Euler number and cut-off size of cyclone separators based on response surface methodology was applied. The results showed that, the vortex finder diameter had a significant effect on the Euler number and cut-off size. With the increase of vortex finder diameter, the Euler number decreases rapidly and then increases slowly, the cut-off size increases. The effect of inlet height and inlet width on Euler number and cut-off size is significant. With the increase of inlet height and inlet width, the Euler number increases, the cut-off size increases. The influence of total cyclone height is greater. The larger the total cyclone height is, the smaller the cut-off size is. The optimal design reduces the Euler number and cut-off size by 58% and 41%, respectively, compared to the reference model.更多还原