ABSTRACT

The present study reports experimental investigations on jet impingement parameters such as nozzle shape, nozzle-plate spacing, Reynolds number, and effect of angle of cut for inclined nozzles on heat transfer. It is observed that the stagnation Nusselt number decreases with an increase in the angle of cut for inclined nozzles. Inclined nozzles produced a higher Nusselt number in the transition and wall jet region than reference nozzles. The radial velocity at the exit of the nozzle is higher for inclined nozzles toward the long lip. The turbulence intensity increases with an increase in nozzle exit angle.

中文翻译：

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倾斜出口喷嘴的冲击传热特性

摘要

本研究报告了喷嘴形状、喷嘴板间距、雷诺数和倾斜喷嘴切割角对传热的影响等射流冲击参数的实验研究。据观察，随着倾斜喷嘴切割角度的增加，停滞努塞尔数减小。与参考喷嘴相比，倾斜喷嘴在过渡和壁射流区域产生更高的努塞尔数。对于朝向长唇的倾斜喷嘴，喷嘴出口处的径向速度更高。湍流强度随着喷嘴出口角的增加而增加。