STABILITY OF 2-PHASE STRATIFIED FLOW AS CONTROLLED BY LAMINAR TURBULENT TRANSITION

被引：6
|
作者：
BRAUNER, N
MARON, DM
机构：
[1] Department of Fluid Mechanics, Heat Transfer Faculty of Engineering, Tel-Aviv University
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 1994年 / 21卷 / 01期
关键词：
D O I：
10.1016/0735-1933(94)90084-1
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Flow pattern transition from stratified-smooth to stratified-wavy has been usually identified with a condition of neutral stability, where destabilizing effects are due to the inertia of the two-phases. It is shown that this is indeed the case when instability is approached with laminar gas phase. However, when the upper gas phase is turbulent, a destabilizing term appears due to dynamic interaction of the turbulent flow with the perturbed free interface. At the transitional range from laminar to turbulent flow regime the evolution of wavy pattern is not predicted by stability condition and coincides with the laminar/turbulent flow regime transition.
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页码：65 / 74
页数：10
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