中文摘要：

煤气的汽轮机的入口温度通常随着时间的过去正在增加，因此常规冷却方法是可能的接近他们的有用限制。调查新奇冷却方法因此是必要的。基于热转移改进的理论，用一个化学的热水池为煤气的汽轮机片使方法凉下来的一部新奇电影被建议。在这个方法，冷却溪流在主要煤气的溪流边加热了的 NH3 的吸热的反应发生，减少在主流和片之间的对流的热转移。因此，电影冷却有效性被改进。测试建议方法的可行性，数字模拟被进行，用有 30 度 angled 的古典扁平的板圆柱的洞(直径， D ) 。在不同刮的比率的电影冷却有效性(M = 0.5， 1.0，和 1.5 ) 被计算并且与常规冷却方法的结果相比。模拟结果证明建议方法能提高不仅在溪流明智的方向，而且在跨度明智的方向使有效性凉下来的电影。平均跨度的电影有效性面对一个化学的热水池被改进，与电影洞下游地增加的 X/D (从到电影洞的直径的电影洞的中心的下游的距离的比率) 的价值。使途径凉下来的新奇电影在 M = 显示出最好的表演 0.5。

英文摘要：

The inlet temperatures of gas turbines are generally increasing over time, so conventional cooling methods are likely to approach their useful limits. It is therefore essential to investigate novel cooling methods. Based on the theory of heat transfer enhancement, a novel film cooling method for gas turbine blades using a chemical heat sink is proposed. In this method, the endothermic reac- tion of an NH3 cooling stream heated by the main gas stream takes place, reducing the convective heat transfer between the main- stream and the blades. Therefore, film cooling effectiveness is improved. To test the feasibility of the proposed method, numerical simulations were conducted, using the classical flat plate with a 30 degree angled cylindrical hole （diameter, D）. Film cooling effectiveness at different blowing ratios （M = 0.5, 1.0, and 1.5） were computed and compared with the results of conventional cooling methods. The simulation results show that the proposed method can enhance film cooling effectiveness not only in the stream-wise direction, but also in the span-wise direction. The span-averaged film effectiveness is improved in the presence of a chemical heat sink, with the value of X/D （the ratio of downstream distance from the center of the film hole to the diameter of the film hole） increasing downstream of the film hole. The novel film cooling approach showed the best performance at M = 0.5.