Engineering Research Equipment Grant: Classic Particle Dynamic Analyzer

摘要CTS-9622183 该研究项目的目的是了解高热通量喷雾冷却中涉及的传热过程，包括传导、对流和蒸发和沸腾形式的相变。 实验研究是主要的研究方法。 近年来的研究表明，喷雾冷却的传热过程与喷雾特性和表面条件密切相关。 为了获得一个成功的模型/相关的过程中，它是必不可少的，有一个数据矩阵的变化：喷雾特性，流体性质，表面条件，喷雾/表面取向相对于重力。 测量喷雾参数的能力对于更好地理解喷雾冷却过程至关重要。 所要求的研究设备是相位多普勒/风速计（PDA），它能够以非侵入方式同时测量液滴直径、速度和液体喷雾的数量通量。 PDA测量这些参数使用的光散射的液滴移动通过一个非常小的探头由两个相交的激光喷雾的特征。 中佛罗里达大学没有类似的设备。 该研究设备也将由机械和航空航天工程系的其他几名教师使用，他们正在进行燃烧和单相/两相流体流动和传热的研究。 ***

ABSTRACT CTS-9622183 The aim of the research project is to obtain an understanding of the heat transfer processes involved in high-heat-flux spray cooling, including conduction, convection, and phase change in the forms of evaporation and boiling. Experimental investigation is the primary research technique. Recent studies have shown that the heat transfer process in spray cooling is highly dependent on the spray characeristics and the surface conditions. In order to obtain a successful model/correlation for he process, it is essential to have a data matrix with variations in: spray characteristics, fluid properties, surface conditions, and spray/surface orientation with respect to gravity. The ability to measure the spray parameters is essential for a better understanding of the spray cooling process. The research equipment requested is a Phase-Doppler/Anemometer (PDA) which is capable of measuring simultaneously the droplets diameters, velocities, and the number flux of a liquid spray in a non-intrusive manner. The PDA measures these parameters using the light scattered by the droplets moving through a very small probe defined by two intersecting laser spray by characteristics. There is no comparable equipment available at the University of Central Florida. This research equipment will also be used by several other faculty members in the Mechanical and Aerospace Engineering department who are conducting research in combustion and single-phase/two-phase fluid flow and heat transfer. ***