基于田口法的螺旋流强化传热优化研究  

Optimization of Enhanced Heat Transfer in Swirl Flow Based on Taguchi Method

作　　者：王涛[1,2] 高增梁 金伟娅[1] Wang Tao;Gao Zengliang;Jin Weiya(Institute of Process Equipment and Control Engineering,Zhejiang University of Technology,Hangzhou 310032,China;Institute of Mechanical Engineering,Quzhou University,Quzhou 324000,China)

机构地区：[1]浙江工业大学过程装备与控制工程系,杭州310032 [2]衢州学院机械工程学院,浙江衢州324000

出　　处：《压力容器》2020年第5期25-30,共6页Pressure Vessel Technology

基　　金：浙江省公益技术研究工业项目(2015C31133)。

摘　　要：为提高传热和降低压力损失,采用田口试验设计法,选取间隙率(C/D=0.026,0.053,0.079,0.105)、节径比(P/D=2,3,4,5)、雷诺数(Re=5300,9100,12900,16700)为设计参数,选取努塞尔数和压降为目标性能参数进行正交设计,正交表选取L 16(43)。采用信噪比(SNR)分析得出:以提高努塞尔数Nu为目标的最优方案为C/D=0.026,P/D=2,Re=16700,以降低压降为目标的最优方案为C/D=0.105,P/D=5,Re=5300。而且努塞尔数和压降随间隙率和节径比的增大而减小,随Re增大而增大。In order to enhance heat transfer and reducing pressure drop in a swirl flow,Taguchi method was used.Clearance ratio(C/D=0.026,0.053,0.079 and 0.105),pitch-to-diameter ratio(P/D=2,3,4 and 5)and Reynolds number(Re=5300,9100,12900 and 16700)were chosen as the design parameters,and Nusselt number(Nu)and pressure drop were chosen as performance parameters for orthogonal design.The orthogonal array L 16(43)was selected as the experimental plan.Through the analysis using signal-to-noise ratio(SNR),the optimum scheme with increasing the Nusselt number Nu as the objective was C/D=0.026,P/D=2,and Re=16700,and he optimum scheme with reducing pressure drop as the objective was C/D=0.105,P/D=5 and Re=5300.In addition,Nusselt number and pressure drop decrease with the increase of clearance ratio and pitch-to-diameter ratio,and increase with the increase of Reynolds number.

关 键 词：田口设计 信噪比 螺旋流 传热 压降 

分 类 号：TH49[机械工程—机械制造及自动化] TK124[动力工程及工程热物理—工程热物理]