原子能科学技术2016，Vol.50Issue(7)：1186-1192,7.DOI:10.7538/yzk.2016.50.07.1186
具有导热的竖环形封闭腔内自然对流数值研究
Numerical Simulation of Natural Convection in Vertical Annular Enclosed Cavity with Thermal Conduction
马崇扬 1张东辉 1邓云 1卓铸 1申凤阳1
作者信息
- 1. 中国原子能科学研究院，北京 102413
- 折叠
摘要
Abstract
Taking the pit of China Experimental Fast Reactor as the prototype,the finite volume method was adopted to conduct numerical simulation for a two-dimension lami-nar steady-state natural convection in vertical annular enclosed cavity.The results show that under the same conditions of Ra ,the average Nu increases with the curvature, while decreasing with the increase of the aspect ratio (ratio of height and gap in annular enclosed cavity).But in lower Ra zone,the average Nu has little change with aspect ra-tio and the heat conduction is dominant.After the Ra exceeds critical value,the heat convection makes a greater impact in cavity and then gradually holds the dominant posi-tions with the increase of Ra .关键词
自然对流/SIMPLE/数值研究Key words
natural convection/SIMPLE/numerical simulation分类
能源科技引用本文复制引用
马崇扬,张东辉,邓云,卓铸,申凤阳..具有导热的竖环形封闭腔内自然对流数值研究[J].原子能科学技术,2016,50(7):1186-1192,7.
