为预测以下列参数为设计变量时压降的非线性变化:导叶的包弧长L、出口角α、排气管的直径De、内置深度S、筒体的直径D、高度Hc、排尘锥高度Hz及排尘口直径Dv，采用响应面参数优化法以减小压降为目标优化分离器。结果表明：利用响应面优化法可成功对多参数进行优化组合，优化后压降减小69.8%。设计范围内压降对各几何参数灵敏度存在差异，结合数值模拟可知，几何参数改变直接影响分离器内部强旋转流场的分布，最优的参数组合可减弱内部湍流运动强度与涡流能量损耗，使其具有较高的降损能力，起到减小压降的目的。

In order to predict the nonlinear changes of the pressure drop when design variables were the eight parameters of the guide vanes’ arc length L,the exit angle α,the vortex finder diameter De,the inserting depth S of the vortex finder,cylinder diameter D,height of the cylinder Hc,dust cone height Hz and outlet diameter Dv,the response surface parameter optimization method is used to optimize the guide vane separator.The results show that the response surface optimization method can successfully optimize the combination of multiple parameters and reduce the pressure drop by 69.8%,and the sensitivity of pressure drop to various geometric parameters within the design range is different.It is demonstrated by the numerical simulation that the optimal combination of parameters can reduce the intensity of internal turbulent motion and eddy current energy loss,leading to higher loss reduction ability and reduced pressure drop.

TK124

国家自然科学基金(51379179)；四川省科技计划重点项目(2017JY0047)