摘要
文章阐述了导热和几何尺寸对平均传热系数和最大局部热流的影响,对之进行了分析并提供了研究试验的结果。计算分析和试验都是针对环形流道进行的。流道内侧为肋化管,外侧为光滑管。为进行计算分析,专门发展了二维计算程序“CONDU”。分析表明:导热和几何尺寸对平均传热系数和最大局部热流有重要影响。相似性分析表明,对于实践中有重要意义的某些场合,有必要引进一个与导热和几何尺寸有关的修正函数。此分析的主要结果已得到实验的证实。
An analysis and some experiments of the effect of heat conduction and geo-metry on mean convective heat transfer coefficient and the maximum local heatflux have been carried out and are reported in this paper. Calculations and experiments are performed for an annular channel, consistingof a finned inner tube and a smooth outer tube, with the aid of a special deve-loped computer code CONDU. Analysis shows that heat conduction and geometry have a significant influenceon the mean convective heat transfer coefficient and the maximum heat flux.Similarity analysis shows that, in many cases of important practice applications itis necessary to introduce a correction function of conductivity and geometry. The main results of the analysis are proved by the experiments.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1990年第1期1-10,共10页
Atomic Energy Science and Technology
关键词
导热
边界
反应堆
放热
传热
Nonuniform boundary
Gas cooled reactor
Heat transfer
Maximum heat flux
