摘要：The paper presents a theoretical model for liquid-vapor interface instabilities for R134a condensation flow in tubes. The model is based on linear Kelvin-Helmholtz instability and capillary instability theories that neglect the effect of gravity and take into account the surface tension and shear stress effects. The normal mode method was used to analyze the system instability reactions to various perturbation wave lengths and physical conditions. Three modes were obtained with one giving the greatest instability wave length for each condition. The cooling temperature had little effect on the greatest instability. The greatest instability wave length increased with decreasing R134a mass flux and quality, with jumps between two instability states. This instability state transition can be used to predict condensation flow regime transitions for intermittent flow. The dimensionless intermittent flow criterion is in good agreement with available experimental data in the literature.
© 2017 Elsevier Ltd

ISSN号：0735-1933

卷、期、页：v 116,p1179-1191

发表日期：2018-01-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：International Journal of Heat and Mass Transfer

参与作者：王金,刘纳,李俊明

第一作者：王吉

论文类型：期刊论文

论文概要：王吉,王金,刘纳,李俊明，Theoretical model of linear instability for condensation flow in circular channels，International Journal of Heat and Mass Transfer，2018，v 116,p1179-1191

论文题目：Theoretical model of linear instability for condensation flow in circular channels