Author(s)

J. George

Abstract

An analysis of experimental and numerical results concerning gas absorption under different physico-chemical and hydrodynamic conditions is presented. The role played by turbulent eddies which develop close to the free surface is emphasized. A conceptual model, using a velocity scaling based on the turbulent kinetic energy value present at the interface, is proposed for K^, the gas transfer velocity. 1 Introduction The knowledge of interfacial gas-liquid mass transfer is of fundamental importance in environment. It controls the epuration of atmosphere by oceans and therefore controls the overall budget of CO2 and other gases, it also controls the phenomenon of acid rains. In the case of weakly soluble gases, for which resistance to transfer takes place inside the liquid phase, interfacial absorption is characterized by the mass transfer coefficient KL which depends on interfacial dynamic phenomen

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