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.
作者
王涛
高增梁
金伟娅
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)
出处
《压力容器》
北大核心
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)。
关键词
田口设计
信噪比
螺旋流
传热
压降
Taguchi method
signal-to-noise ratio(SNR)
swirl flow
heat transfer
pressure drop
