水资源与水工程学报2016，Vol.27Issue(6)：134-140,7.DOI:10.11705/j.issn.1672-643X.2016.06.24
突扩通道内横掠圆管对流换热的数值模拟
Numerical simulation of the confined circular cylinder flow and heat transfer in a sudden expansion channel
摘要
Abstract
A numerical simulation is performed by adopting unsteady mathematical mode for the confined circular cylinder flow and heat transfer in a sudden expansion channel. The simulations were carried out under different Reynolds number Re and the sudden expansion ratio of the channel Er . The results indica-ted that numerical solutions could be steady state, periodical oscillatory or chaotic with the change of Reynolds number. Meanwhile, the heat transfer around the cylinder was enhanced obviously with the in-crease of Reynolds number. The heat transfer around the cylinder was weak with the increase of the chan-nel expansion ratio when 10≤Re≤100 or 250≤Re≤300, but when 100< Re≤200, heat transfer a-round the cylinder did not always decrease monotonously.关键词
突扩通道/圆管/对流换热/数值模拟/通道突扩比Key words
a sudden expansion channel/circular cylinder/convection and heat transfer/numerical simulation/expansion ratio of the channel分类
建筑与水利引用本文复制引用
祖珊珊,王治云,杨茉..突扩通道内横掠圆管对流换热的数值模拟[J].水资源与水工程学报,2016,27(6):134-140,7.基金项目
国家自然科学基金项目(51306121) （51306121）
