Wall shear stress around a stationary gas slug in a downward liquid flow
O.N. Kashinsky, A.S. Kurdyumov, and P.D. Lobanov
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Pages: 85–89
Abstract
A single cell of the gas-liquid slug flow was studied. The flow around an immobile gas slug in a downflow of liquid and under its bottom was measured. The values of the wall shear stress and its pulsations were measured by the electrodiffusion method depending on a distance from the slug nose. It is shown that in a liquid film around a slug, turbulent pulsations are damped in comparison with a single-phase liquid flow. In the bottom part of a slug, where vortices are detached, turbulent pulsations exceed significantly the single-phase ones.
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