水平矩形通道内纵向涡强化传热数值研究

A Numberical Study of Enhanced Heat Transfer by Longitudinal Vortex in Horizontal Rectangled Duct

纵向涡是一种新型的传热强化技术 ,其传热性能好 ,安装方便 ,使用可靠 .以数值计算方法分析了在常壁温条件下纵向涡对换热器的传热性能以及流动阻力的影响 .研究发现 ,纵向涡发生器的传热强化效果与翅前端距有很大的关系 ,并存在一个最佳的翅前端距 .

The longitudinal vortex generator is a new technique of enhanced heat transfer,this paper presents the effects of the longitudinal vortex in horizontal rectangled duct on the heat transfer coefficient and pressure drop. Numberical analysis are carried out for different Reynolds numbers at the costant wall temperature ,it shows that there is the best front interval between two fins .