Engineering Research Equipment Grant: Classic Particle Dynamic Analyzer

工程研究设备补助金：经典粒子动力学分析仪

• 批准号: 9622183
• 负责人: Louis Chow
• 金额: $ 4.93万
• 依托单位: The University of Central Florida Board of Trustees
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-02-15 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9622183&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Grant; Classic

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. ***

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、对流以及蒸发和沸腾形式的相变。 实验研究是主要的研究技术。 最近的研究表明，喷雾冷却中的传热过程高度依赖于喷雾特性和表面条件。 为了获得过程的成功模型/相关性，必须拥有一个具有以下变化的数据矩阵：喷雾特性、流体特性、表面条件以及相对于重力的喷雾/表面方向。 测量喷雾参数的能力对于更好地了解喷雾冷却过程至关重要。 所需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 使用液滴移动通过一个非常小的探针所散射的光来测量这些参数，该探针由两个相交的激光喷雾按特性定义。 中佛罗里达大学没有类似的设备。 该研究设备也将被机械和航空航天工程系的其他几名教员使用，他们正在进行燃烧和单相/两相流体流动和传热研究。 ***