几种涡流发生器对矩形通道流阻和传热性能影响的-中国电机工程学会.pdf

第 30 卷 第 35 期 中 国 电 机 工 程 学 报 Vol.30 No.35 Dec.15, 2010 2010 年 12 月 15 日 Proceedings of the CSEE ©2010 Chin.Soc.for Elec.Eng. 55 0258-8013 (2010) 35-0055-06 TK 172 A 470 10 文章编号： 中图分类号： 文献标识码： 学科分类号： ⋅ 几种涡流发生器对矩形通道流阻和 传热性能影响的数值模拟 高猛，周国兵 (华北电力大学能源动力与机械工程学院，北京市 昌平区 102206) Numerical Simulations on the Effect of Several Vortex Generators in Rectangular Channel on Flow Resistance and Heat Transfer Performances GAO Meng, ZHOU Guobing (School of Energy Power and Mechanical Engineering, North China Electric Power University, Changping District，Beijing 102206, China) ABSTRACT: Numerical simulations were carried out to study 摘要：在雷诺数 Re 7 000~26 800 范围内，对矩形通道分别 the performance of heat transfer enhancement and pressure 布置单排一对斜截半椭圆柱面、矩形小翼等 6 种涡流发生器 drop of a pair of single-row vortex generators (VGs) such as 的强化传热效果和压降特性进行数值模拟，并用综合评价因 oblique-cut semi-elliptic cylinder shells, rectangular winglets, 子对比分析各涡流发生器强化传热与流动阻力综合性能。结 etc. (6 types), which were installed in a rectangular channel, 果表明，斜截半椭圆柱面综合性能最好，分别比矩形小翼、 respectively. The Reynolds number (Re) ranged from 7000 to 斜截半圆柱面、斜截半椭圆柱体高 11.40%~21.88% 、 26800. Then the comprehensive performances of heat transfer 1.98%~2.11%、2.53%~3.50% ；具有较小迎流截面和流线型 enhancement and flow loss of these VGs were analyzed by 设计的斜截半椭圆柱面产生的流阻最低，最高可比矩形小翼 comparing the comprehensive evaluation factor. The results 低 22.45% ，比斜截半圆柱面和斜截半椭圆柱体略低。斜截 showed that the oblique-cut semi-el