NUMERICAL AND EXPERIMENTAL STUDY ON HEAT TRANSFER AND FLUID FLOW CHARACTERISTICS OF THE HOLED BAFFLES
The fluid flow and heat transfer characteristics for a rectangular channel with staggered perforated baffles which holes are arranged in parallel way have been studied numerically under Re number from 1000 to 15000. The standard k-ε turbulent model was chosen, the computation was based on the finite volume method. The SIMPLEC algorithm was used to solve the equations. Compared with the solid baffle channel, some small jet flow appeared behind the baffles which impinged the large vortex when the baffles were changed into perforated ones. So, the boundary layer separations, internal flow swirls and fluid intermingles are taken place. For friction factor, the prediction value is smaller than the experimental data, but the trends are similar. It is found that Nu number by calculation is fitted well with the experimental data.
heat transfer parallel hole perforated baffle fluid flow
Xiaowei FAN Yuemei WANG Huifan ZHENG Ruiliang YANG
Zhongyuan University of Technology Zhengzhou,450007, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）