层板冷却特性的实验与数值模拟研究

在大尺寸低速回流式风洞内对一种应用于涡轮叶片的典型的层板结构进行了流阻特性和冷却特性的实验研究,获取了该层板综合冷却效果与层板两侧压比的关系,结果表明层板具有很高的冷却效果。运用商用软件Fluent6 0对其进行了流固耦合传热计算,分析了层板内部复杂的流动和换热情况,得到了在不同的进出口条件下该层板的综合冷却效果。计算结果和实验值进行了比较,两者符合较好,表明通过数值计算获取层板冷却效果的方法是可行的。

Experimental and numerical investigation of the cooling characteristics in a laminate porous plate

A typical configuration of laminate plate for turbine blade application was manufactured and tested in a large scale low speed close-looped wind tunnel. The internal flow resistance and the cooling effectiveness were obtained. The experimental results showed that very high effectiveness can be achieved by using lamilloy. Coupled fluid/solid heat transfer calculations were performed to obtain the cooling effectiveness and the complex flow and heat transfer patterns in the laminate plate by using the commercial codes, FLUENT6.0. The numerical results showed the agreement with the experimental data were fairly good and the coupled fluid/solid method is a feasible way to obtain the cooling effectiveness of lamilloy.