Numerical Analysis of Flow and Heat Transfer of Inclined Impingement in the Trailing Edge of Turbine Blade

摘要：

　　For further strengthening heat transfer in turbine blade trailing edge,an inclined impingement channel was put up with for the intemal cooling of trailing edge.The effect of the Reynolds number and area ofjet hole on flow and heat transfer characteristics of the inclined impingement channel were numerically analyzed and the effect of the Reynolds number was also compared with a pin-fin channel.Results reveal that heat transfer of all inclined impingement channels is obviously better than that of the pin-fin channel,although flow loss is bigger than the pin-fin channel.For the same Reynolds number,when area ofjet hole is halved,friction factorf is quadrupled and total Nusselt number NuT is increased by l.3 times.For the same jet hole diameter,both f and Nur grow with increasing Reynolds number.And if the overall performance index is of concern,the inclined impingement channel with d=0.7mm is the most favorable.

关键词： Turbine blade Trailing edge Inclined impingement Numerical simulation pin-fin

作者: TIAN Ning ZHU Hui-ren ZHANG Mei-hua

作者单位: School of Power and Energy,Northwestern Polytechnical University,Xian,Shannxi 710072,China

会议类型: 国际会议

会议名称: The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2014-09-15（万方平台首次上网日期，不代表论文的发表时间）