Abstract
When carrying out experiments on absorption of oxygen or carbon dioxide in cocurrent stratified gas-liquid flows, we have determined absorption coefficient, interfacial shear stress and an interfacial roughness. Using these results, we perform a critical study of local absorption models with interfacial shear velocity and interfacial roughness as a scaling of turbulence of the liquid phase in the interfacial region. By these means we show the fundamental role of dissipative structures in absorption phenomena. We propose in conclusion a practical formula to calculate an absorption coefficient useful for very large variations of interfacial Reynolds number.
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