Non-Steady Impingement of Submerged Jets: Heat Transfer

摘要CTS-9301287 Robert H.页面 提出了利用自激振荡喷嘴非定常冲击射流的新概念。 本文对淹没射流冲击强化表面换热进行了理论和实验研究。 该概念围绕修改标准的直列式喷嘴的潜力，使它们成为自振荡，并有能力迫使振荡边界层的冲击表面上的发展。 据信，可以利用这种搅动的表面边界层的出现来增加来自冲击射流的热传递。 红外传热射流冲击装置（HJIF）在得克萨斯州A M大学将用于实验研究的冲击。 我们的目标将是更好地了解这种非稳态现象，以便它可以被应用到这种物理情况下，以改善传热，以及获得必要的启示约自振荡或共振流，这样的知识可能有未来使用的额外的表面边界层相互作用条件，涉及传质和化学反应。

ABSTRACT CTS-9301287 Robert H. Page A new concept to utilize the non-steady impinging jet from a self oscillating nozzle is proposed. Enhancing the surface heat transfer due to a submerged jet impingement is to be studied theoretically and experimentally. The concept centers around the potential of modifying standard in-line jet nozzles such that they become self oscillating and have the ability to force an oscillating boundary layer development on the impingement surface. It is believed that this agitated surface boundary layer occurrence can be exploited to increase the heat transfer from an impinging jet. The Infrared Heat Transfer Jet Impingement Facility (HJIF) at Texas A&M University will be used for the experimental studies of the impingement. The objective will be to obtain a better understanding of this non-steady phenomena in order that it can be applied to this physical situation to improve the heat transfer as well as to gain the necessary enlightenment about self oscillating or resonant flows, such that the knowledge may have future use for additional surface boundary layer interaction conditions involving mass transfer and chemical reactions.