基于FLUENT的换热设备中并联管组均流模型设计  

The Design of Uniform Tube Flow Rates Model for Parallel Tubes of Heat Exchangers Based on the FLUENT

作　　者：杨程[1] 牛永江[1] 罗海玉[1] 李奇军[1] 

机构地区：[1]天水师范学院机电与汽车工程学院,甘肃天水741000

出　　处：《机械设计与制造》2015年第5期150-155,共6页Machinery Design & Manufacture

基　　金：天水师范学院中青年教师科研资助项目(PSA1403)

摘　　要：基于流体动力学基本原理和FLUENT软件,以并联管组的支管直径为设计参数,利用敏感性分析法确定敏感参数。通过多元线性拟合得出流量分布不均匀系数与敏感参数的二元三次关系式,计算得出当流量分布不均匀系数在敏感参数取值范围内取最小值时的支管直径大小。利用FLUENT对同尺寸并联管组的流量分布不均匀系数进行验证计算。计算结果表明:优化后的流量分布不均匀系数比优化前降低了68.2%,提高了并联管组的流量分布均匀性,为今后并联管组的工程设计提供了一种方法。It carries out the work based on the basic principle of hydromechanics and FLUENT. Firstly,the sensitive parameters are determined by taking the tubes diameter for design parameters and analyzing the sensitive parameters.Then,obtains a binary cubic relation between the non-uniformity and the sensitive parameters by multiple liner fitting,and the tubes diameter when the minimum Non-uniformity in the value range of the sensitive parameters.Next,the non-uniformity of the same size parallel tubes is worked out by FLUNET.The result shows that the non-uniformity is decreased by 68.2% after optimization design,it improves the uniform tube flow rates.It provides a method for the parallel tubes designation.

关 键 词：并联管组 敏感性分析 流量分布不均匀系数 多元线性拟合 

分 类 号：TH16[机械工程—机械制造及自动化] TK51[动力工程及工程热物理—热能工程]