Experimental and Numerical Investigation of Impingement Cooling with Spent Flow in the Blade Leading Edge

摘要：

A leading edge model with 10 inline jets and concave target was experimented with transient liquid crystal method. Seven CFD methods were tested based on both the experimental contour and the uniformity of Nusselt numbers. The Reynolds number ranges from 10,000 to 20,000. Strong spent flow shifts from the stagnation point and weaken the impingement heat transfer. The heat transfer coefficients increase with Reynolds number but different work conditions show similar heat transfer distribution. Half CFD models, the RNG k -ω model and the k-ω SST model did not work well because of the flow instability and asymmetry nature. The Realizable k-ω model is efficient and accurate for the leading edge impingement.

关键词： impingement spent flowsleading edge

作者: YANG Li REN Jing JIANG Hong-de

作者单位: Department of Thermal Engineering, Tsinghua University, Beijing, China

会议类型: 国际会议

会议名称: 4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)

会议地点: 西安

会议语种:英文

页码: 240-247

在线出版日期: 2012-09-10（万方平台首次上网日期，不代表论文的发表时间）