The interface configuration in two-phase stratified pipe flows

被引：43
|
作者：
Gorelik, D [1 ]
Brauner, N [1 ]
机构：
[1] Tel Aviv Univ, Fac Engn, Dept Fluid Mech & Heat Transfer, IL-69978 Tel Aviv, Israel
来源：
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 1999年 / 25卷 / 6-7期
关键词：
stratified flow; interface; curvature; surface tension; contact angle; wettability;
D O I：
10.1016/S0301-9322(99)00038-5
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Exact analytical solution is obtained for the interface shape between two immiscible fluids and for the capillary pressure in the case of unidirectional axial laminar pipe flow. The solution is determined by three dimensionless parameters: the holdup, fluid/wall wettability angle and the Eotvos number, Eo = Delta rho g cos alpha R-2/sigma(12). The ranges of parameter values, for which the model of flat interface (Eo-->infinity), or models of constant interfacial curvature can be applied, are explored. Finally, the implications to modeling of stratified flow characteristics and stability are discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：977 / 1007
页数：31
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