A Theoretical & Experimental Study of Transition & Film Boiling on Vertical Surfaces including the Effect Surface Conditions, Liquid Sub-Cooling and Flow Velocity

理论

• 批准号: 8417684
• 负责人: Vijay Dhir
• 金额: $ 16.2万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-08-15 至 1989-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8417684&HistoricalAwards=false
• 关键词: Theoretical; & Experimental; Study; Transition

This study focuses on transition and film boiling. The objective is to provide a fundamental understanding of the phenomena occurring under pool and forced flow of saturated and subcooled liquids. High-speed photography along with holographic interferometric technique and gamma densitometry are used to determine the heat flux into the subcooled liquid and local void fraction profiles at the wall. Mechanistic models for transition and film boiling are developed.

本研究的重点是过渡和薄膜沸腾。 目标是 提供了一个基本的理解下发生的现象， 池和饱和和过冷液体的强制流动。 高速 用全息干涉技术和伽马射线沿着摄影 密度测定法用于确定进入过冷的热通量 在壁处的液体和局部空隙率分布。 机械论 建立了过渡态和膜态沸腾模型。