化工学报 ›› 2003, Vol. 54 ›› Issue (8): 1055-1058.

• 传递现象 • 上一篇    下一篇

粗糙肋面上湍流热量传递中场协同关系的数值分析

陈颖;邓先和;王杨君   

  1. 华南理工大学教育部传热强化与过程实验室, 广东 广州 510640;广东工业大学材料与能源学院,广东 广州 510643
  • 出版日期:2003-08-25 发布日期:2003-08-25

NUMERICAL ANALYSIS OF SYNERGY RELATION BETWEEN HEAT FLUX WITH VELOCITY FIELD OF TURBULENCE FLOW ON COARSE WALL

CHEN Ying;DENG Xianhe;WANG Yangjun   

  • Online:2003-08-25 Published:2003-08-25

摘要: 用数值模拟的方法将湍流流动的传热分为传热层流底层和湍流层,来考察传热层流底层中温度梯度矢量与速度夹角对湍流流动换热的影响,用场协同理论分析了湍流条件下粗糙肋面的传热强化问题.

关键词:

数值分析, 湍流流动, 场协同, 换热

Abstract: A numerical investigation of a 2D flow passage the whole domain of which is subdivided into a viscosity-affected laminar layer and a fully-turbulent layer is presented. The calculated results indicate that the angles between temperature gradient and velocity in the laminar layer influences heat transfer in the whole turbulent layer. They can enhance heat transfer,reduce heat transfer coefficient, or have no effect on it. Enhanced heat transfer on the coarse wall is analyzed with the Field-Synergy theory while water is in fully-developed turbulent flow.

Key words:

数值分析, 湍流流动, 场协同, 换热