基于响应曲面法小型旋风分离器的多目标优化

Multi-Objective Optimization of Small Cyclone Separator Using Response Surface Methodology

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%。

Numerical study on gassolid 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 cutoff 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 cutoff size. With the increase of vortex finder diameter, the Euler number decreases rapidly and then increases slowly, the cutoff size increases. The effect of inlet height and inlet width on Euler number and cutoff size is significant. With the increase of inlet height and inlet width, the Euler number increases, the cutoff size increases. The influence of total cyclone height is greater. The larger the total cyclone height is, the smaller the cutoff size is. The optimal design reduces the Euler number and cutoff size by 58% and 41%, respectively, compared to the reference model.