离心力场下多孔介质中的热驱动现象  

Thermally driven in porous medium in a centrifugal force field

作　　者：夏婕[1,2] 常海萍[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016 [2]飞行教官训练基地理论训练系,安徽蚌埠233000

出　　处：《山东大学学报（工学版）》2013年第1期123-126,共4页Journal of Shandong University（Engineering Science）

基　　金：国家自然科学基金资助项目(50276027);国防基础科研资助项目(J1400D001)

摘　　要：基于涡轮叶片新型超级冷却技术,在具有冷却通道的新型冷却结构中加入多孔介质,采用数值模拟方法研究了新型冷却结构的热驱动现象,计算结果和实验结果基本一致。研究结果表明在新型冷却结构中加入多孔介质后,封闭腔体中仍然发生了热驱动流动。而且通过数值模拟获得的流场和温度场,进一步地研究封闭腔体中流体的流动和换热过程。Based on the research of turbine blade super cooling technology, the porous medium was installed in a new kind of cooling configuration with cooling tunnels. Numerical simulations were carried out to investigate the thermally driven in the new kind of cooling configuration in a centrifugal force field. The results of experiments and numerical simulations were basically consistent. The results showed that the thermally driven happened after porous medium was installed in a new kind of cooling configuration. Furthermore, the fluid and heat transfer processes were found in enclo- sure through fluid and temperature field gained by numerical simulations.

关 键 词：多孔介质 热驱动 离心力场 数值模拟 封闭腔体 

分 类 号：TK124[动力工程及工程热物理—工程热物理]