Some features of the wall shear stress in a vertical tube around a small taylor bubble in an upward flow

被引:1
作者
Timkin, L. S. [1 ]
Gorelik, R. S. [1 ]
机构
[1] Russian Acad Sci, Kutateladze Inst Thermophys, Siberian Branch, Novosibirsk 630090, Russia
关键词
Particle Image Velocimetry; Wall Shear Stress; Liquid Film; Technical Physic Letter; Vertical Tube;
D O I
10.1134/S1063785013100118
中图分类号
O59 [应用物理学];
学科分类号
摘要
The wall shear stress induced by a Taylor bubble in upward flow in vertical tube has been studied with eight electrodiffusion friction probes placed in one cross section of the tube uniformly over its perimeter. The mean shear stress averaged over the tube perimeter in liquid film between the small (3-4 tube diameters) gas bubble and the tube wall is positive in the transient and turbulent-flow regimes.
引用
收藏
页码:870 / 873
页数:4
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