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

本研究主要针对相变和膜沸腾进行研究。本课程的目的是对饱和和过冷液体在水池和强迫流动下发生的现象有一个基本的了解。采用高速摄影、全息干涉技术和伽马密度法测量了过冷液体的热流密度和壁面局部含气率分布。建立了相变和膜沸腾的力学模型。

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.