文献类型：期刊文献

中文题名：氮氢混合气体单孔冲击射流换热实验研究

英文题名：EXPERIMENTAL INVESTIGATION OF SINGLE CIRCULAR IMPINGEMENT HEAT TRANSFER BY NITROGEN-HYDROGEN MIXTURE

作者：邢改兰[1];苏永升[1];周邵萍[1]

机构：[1]华东理工大学机械动力工程学院,上海200237

年份：2007

卷号：16

期号：4

起止页码：36

中文期刊名：矿冶

外文期刊名：Mining And Metallurgy

收录：CSTPCD;;Scopus

语种：中文

中文关键词：冲击射流换热;实验研究;氮氢混合气体

外文关键词：impingement heat transfer; experimental investigation;nitrogen-hydrogen mixture

摘要：以氮氢混合气体为模化介质,研究了单孔冲击射流传热过程。主要考察了喷嘴与冷却表面的无量纲距离H/d,驻点雷诺数Re(5000An experimental investigation on single circular impingement heat transfer by nitrogen-hydrogen mixture is presented. The study aims to determine the effect on stagnation heat transfer coefficient of the nozzleto-plate spacing normalized by nozzle diameter, H/dj, jet Reynolds, Re, based on arrival velocity from 5000 to 60000, and Prandtl number in the range of 0.4 〈 Pr 〈 0.71. It is found that the stagnation Nusselt number is independent of nozzle-to-plate spacing up to 6.4 nozzle diameters. All experimental data have been correlated within 5 % as functions of Reynolds number and Prandtl number. The experiment findings are compared with Gardon＇s correlation and derivations are observed at high Reynolds number.