多级离心风机气动性能数值模拟优化研究  

Aerodynamic optimization design with numerical simulation for multistage centrifugal fan

作　　者：梁培生[1] 张国政[2] 陈文杰[1] 

机构地区：[1]江苏科技大学,江苏镇江212013 [2]中国农业科学院蚕业研究所,江苏镇江212018

出　　处：《节能》2014年第11期12-15,2,共4页Energy Conservation

基　　金：现代农业产业技术体系专项(项目编号:CARS-22);国家"十二五"科技支撑计划项目(项目编号:2011BAD33B04)

摘　　要：用Fluent对多级离心风机的某一级进行数值模拟计算,由伯努利方程发现,叶轮是压力损失最大的零部件,因此重点研究了叶轮叶片进口安放角、出口安放角、叶片数量3个变量对效率的影响。进一步应用响应面模型优化方法,用二次回归得到了效率关于3个变量的函数关系式,计算出的函数最大值与数值模拟方法误差为0.16%,且比原风机的效率提高了5.9%,为风机的改进设计提供了参考依据。With fluent numerical simulation for one stage of multistage centrifugal fan,it w as found that impeller w as the part w hich lost most of the pressure from Bernoulli's equation,thus mainly discuss efficiency about three variables including inlet-placed angle,outlet-placed angle,quantity of blade. Furtherly use optimization design of response surface model,get a function of efficiency about three variables w ith quadratic regression method,the maximum value made from function have just 0. 6 percent deviation compare to numerical simulation,and the result improved 5. 9 percent than original efficiency,provide improved design of multistage centrifugal fan w ith practical reference value.

关 键 词：多级离心风机 响应面模型 二次回归 

分 类 号：TH432[机械工程—机械制造及自动化]