窄缝环形通道内单相液体传热和压降的实验研究  

Experimental Study of Flow and Heat Transfer of Narrow Annuli with Bilateral Heating

作　　者：彭常宏[1] 吴埃敏[1] 郭贇[1] 贾斗南[1] 秋穗正[1] 苏光辉[1] 聂常华[2] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室 [2]中国核动力研究设计院空泡物理自然循环国家级重点实验室

出　　处：《核动力工程》2003年第S2期92-96,共5页Nuclear Power Engineering

基　　金：中国核动力研究设计院空泡物理自然循环国家级重点实验室基金;西安交通大学动力工程多相流国家重点实验室资助

摘　　要：在间隙为1.5mm的垂直环形窄缝通道内,通过内外管双面通电来加热流体,进行环形窄缝内单相液体传热和压降的研究。通过实验得出,内管和外管的Nu数准则式,双面加热时,内管对外管、外管对内管传热的影响,单相压降计算公式以及传热和流动的联系。Experiments were conducted to study the single-phase forced convection heat transfer and flow in vertical 1.5mm annuli. The test section can be simultaneously heated from inner and outer tubes by electricity. Based on these data, the Nu number and the friction factor correlations were obtained. A comparative analysis on heat transfer between bilateral and unilateral heating was carried out. At last, the analogy of momentum and heat transfer was carried out.

关 键 词：环形窄缝 单相传热 单相压降 

分 类 号：TK124[动力工程及工程热物理—工程热物理]