Experimental Study and Modeling of Subcooled Bubbly Boiling Flow

过冷气泡沸腾流的实验研究和模拟

• 批准号: 8918830
• 负责人: Ramendra Roy
• 金额: $ 16.05万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1993-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8918830&HistoricalAwards=false
• 关键词: Experimental; Study; Modeling; Subcooled; Bubbly

This proposal seeks to study experimentally fundamental heat transfer issues for subcooled bubbly boiling flow in the annulus between two tubes, the inner one heated. In such flows, heat transfer can take place between the walls and the vapor, between the walls and the liquid, between liquid and vapor, and latent heat is absorbed in the vaporization process. By means of very detailed measurements of time resolved velocity, temperature, and by flow visualization, the author hopes to gain the basic knowledge to formulate a more comprehensive theoretical model than presently exists. In particular, the PI hopes to investigate the role of turbulence in this process. He proposes to do this for two fluids, R113 and water to determine the extent of universality of his conclusions. The final objective of the work is to develop a mechanistic model of subcooled boiling flow on the basis of these measurements.

这项建议旨在通过实验研究基本热量 过冷泡状沸腾传热问题 两个管子之间的环形空间，里面的一个被加热。 以这样 流动，热传递可以发生在壁和 蒸汽，在壁和液体之间，在液体和 蒸汽，潜热在汽化过程中被吸收 过程 通过非常详细的时间测量 解决速度，温度，并通过流动可视化， 作者希望获得基础知识来制定更 比现有的理论模型更全面。 在 特别是，PI希望调查湍流的作用， 在这个过程中。 他建议对两种流体R113进行此操作 和水，以确定他的普遍性的程度 结论. 这项工作的最终目标是制定一个 过冷沸腾流动的机理模型， 这些测量。