横掠椭圆钉头板的换热及流阻的实验研究

Experimental Research for Heat Transfer and Flow Resistance Characteristics of Elliptic Pin-Fin Plate in Crossflow

应用萘升华热质比拟技术,对空气横掠钉头板的换热及流阻特性进行了实验研究。讨论了排列方式及雷诺数对传热及阻力的影响。实验结果表明,钉头叉排时,钉头板具有较高的 Nusselt 数及 Euler 数。

Experiments were performed,in which the heat-mass transfer analogy and thenaphthalene sublimation technique were employed,to investigate the heat trsansfer and flowresistance of elliptic pin-fin plate in crossflow of air.The effects of pin-fin arrangements andReynolds number are also discussed.The experimental results show that the staggered pin-finplate has greater mean Nusselt number and Euler number compared with the in-line pin-finplate.