圆管内插入环状多孔介质的换热性能研究及其场协同分析  

STUDY ON HEAT TRANSFER PERFORMANCE FOR TUBE INSERTED WITH RING POROUS AND ITS FIELD SYNERGY ANALYSIS

作　　者：黄志锋[1] 刘伟[1] 杨昆[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《工程热物理学报》2009年第5期844-846,共3页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划资助项目(No.2007CB206903);国家自然科学基金资助项目(No.50721005)

摘　　要：本文运用数值计算的方法,以空气为流动介质,研究了圆管内插入环状多孔介质在充分发展的层流区的换热及流动综合性能,并进行了场协同分析。结果表明,在圆管内插入环状多孔介质可以有效提高换热与流动的综合性能,其PEC值随Re数的增大呈现缓慢增大的趋势。多孔材料的孔隙率对综合性能的影响最为明显,孔隙率越高,综合性能越好。The flow and heat transfer integrated performance for the fully developed laminar air flow in a tube inserted with the ring porous media was studied numerically. Its mechanisms of enhancing heat transfer were also analyzed using the principle of field synergy. The results showed that the tube inserted with the ring porous media can effectively improve the flow and heat transfer performance, the value of the PEC had increased slowly with the increasing Reynolds number. The porosity of the porous had the most obvious impact on the integrated performance. The higher the porosity, the better the performance.

关 键 词：多孔介质 强化换热 场协同 

分 类 号：TK124[动力工程及工程热物理—工程热物理]