文档介绍：
肋角度对带肋通道内蒸汽流动和换热特性
的影响#
徐亮,税琳棋,张帅,高建民*
5
10
15
20
25
30
35
40
(西安交通大学机械制造系统工程国家重点实验室,710049,西安)
摘要:在带肋单通道蒸汽强化换热试验研究的基础上,采用 SSG 雷诺应力湍流模型,求解了三维定常雷诺
平均 Navier-Stokes 方程,对 30°、45°、60°、90°四种带肋通道进行了蒸汽流动的数值计算,同时研究了雷
诺数对矩形带肋通道中冷却气体的流动和传热特性的影响,并比较分析了不同肋角度下带肋通道的流动和
传热特性。结果表明:斜置肋片能有效提高带肋通道的换热效果,同时也将带来很大的流动阻力。与 90°
带肋通道相比,60°,45°和 30°带肋通道的热力系数别增加了大约 %,%和 %。即就综合热力
性能来说, 60°带肋通道是最好的结构形式。
关键词:动力机械工程;蒸汽冷却;带肋通道;肋角度
中图分类号:TK124
Influence of rib angle on heat transfer and flow
characteristics in a rectangular channel used steam as the
coolant
XU Liang, SHUI Linqi, ZHANG Shuai, GAO Jianmin
(State Key Laboratory for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an
China)710049
Abstract: On the basis of experimental study on steam forced heat transfer in the ribbed channels, the
SSG Reynolds stress turbulent model was adopted to solve the three dimensional steady
Reynold-averaged Navier-Stokes equations. The numerical simulation was carried out to a rectangular
channel with four different angled ribs (30°,45°,60°,90°) and the convective working fluid is steam. It
studied the influence of Re number on flow and heat transfer characteristics and analyzed
comparatively the cooling effects of four channels with different angled ribs. The results showed that
inclined rib can effectively improve heat transfer of the ribbed channel, at the sa