CIESC Journal

• 化工学报 • 上一篇    下一篇

人工汽化中心表面核状沸腾传热的研究——(Ⅰ)汽化中心的大小和密度对沸腾过程中汽泡脱离直径和频率的影响

陈嘉宾,蔡振业,林纪方   

  1. 大连工学院化学工程系 ,大连工学院化学工程系 ,大连工学院化学工程系
  • 出版日期:1986-09-25 发布日期:1986-09-25

Boiling on Surfaces with Artificial Nucleation Sites( I ) Effect of Cavity Size and Cavity Density onBubble Diameter and Frequency ofDeparture in Pool Boiling

Chen Jiabin Cai Zhenye and Lin Jifang (Department of Chemical Engineering, Dalian Institute of Technology)   

  • Online:1986-09-25 Published:1986-09-25

摘要: 本文用高速摄影和光导纤维探头两种方法;在规则排列的人工汽化中心表面上,考察了汽化中心的大小和密度对汽泡脱离直径和频率的影响.基于汽泡受力分析,考虑到由于汽化中心密度的增加对汽泡脱离的影响,本文建立了描述汽泡脱离直径和频率与汽化中心大小、密度以及壁面过热度之间关系的数学模型.并通过系统的实验数据加以验证.

Abstract: The effect of cavity size and cavity density on surfaces with artificial nucleation sites, on bubble diameter and trequency of departure in pool nucleate boiling was studied by using high-speed photography and laser fiber probe. A theoretical model has been developed from the analysis of force equilibrium of a bubble on a nucleation site with dueconsideration of the mutual influence of the surrounding bubbles. Preducted results obtained from the proposed model agree satisfactorily withexperimental data.