CAREER: Characterization of Liquid Sprays Impacting Hot Surfaces in Cooling Applications: Emphasis on the Pre-Impact Process

职业：冷却应用中影响热表面的液体喷雾的表征：强调预影响过程

• 批准号: 9703062
• 负责人: Jorge Gonzalez-Cruz
• 金额: $ 27万
• 依托单位: University of Puerto Rico Mayaguez
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9703062&HistoricalAwards=false
• 关键词: CAREER; Characterization; Liquid; Sprays; Impacting

ABSTRACT The proposed research seeks to characterize liquid sprays impacting hot surfaces in cooling applications. The emphasis is on the pre-impact process and sprays with droplets that are less than 150 mm in diameter. Sprays with such fine droplets are more susceptible to the influence of the surrounding conditions. The goal of the project is to determine the optimal conditions for achieving maximum stable high heat flux in spray cooling applications. Experiments will be conducted to measure the droplet velocity, size, and temperature under different conditions. Innovative techniques such as the Exciplex Fluorescence Technique will be used to measure the temperature of in-flight droplets. Finite difference simulations will be carried out using a k-e model to describe gas phase turbulence. The educational plan includes participation of undergraduate students in the project and integration of the knowledge gained from the research into existing courses.

摘要 拟议的研究旨在表征冷却应用中影响热表面的液体喷雾。 重点是预冲击过程和直径小于 150 毫米的液滴喷雾。 具有如此细小液滴的喷雾更容易受到周围条件的影响。 该项目的目标是确定在喷雾冷却应用中实现最大稳定高热通量的最佳条件。 将进行实验来测量不同条件下的液滴速度、尺寸和温度。 Exciplex 荧光技术等创新技术将用于测量飞行中液滴的温度。 将使用 k-e 模型进行有限差分模拟来描述气相湍流。 教育计划包括本科生参与该项目以及将从研究中获得的知识整合到现有课程中。