Author： Kashinsky O. Kurdyumov A. Lobanov P.
Publisher： MAIK Nauka/Interperiodica
ISSN： 0869-8643
Source： Thermophysics and Aeromechanics, Vol.18, Iss.1, 2011-03, pp. : 37-41
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Abstract
Results of experimental investigation of the bubbly gas-liquid flow in a vertical annular channel are presented. The average and pulsation shear stresses and distributions of local void fraction were measured by the electrochemical method on both channel walls. It is shown that with a rise of gas flow rate ratio the value of wall shear stress increases significantly, and this effect becomes higher at a decrease in superficial liquid velocity. A presence of the gas phase effects significantly shear stress on the inner wall. Relative intensity of shear stress pulsations increases similarly on both channel walls.
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