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- W1983591349 abstract "Abstract The problem of absorption with a chemical reaction in a turbulent falling film is theoretically analyzed by assuming that the mass transport normal to the interface takes place as a combined molecular and turbulent mechanism. It is assumed that the eddy diffusivity is a function of the distance to the gas-liquid interface. A very simple and accurate approximate solution is obtained when chemical reactions are of first-order, reversible and irreversible, type. The main result is the expression for predicting the rate of mass transfer at the interface. When compared with results obtained from the surface renewal school it is found that most of them are encompassed by our final result using this eddy diffusivity model. Moreover it is shown that when the convective transport term, parallel to the interface, is neglected the resulting expression coincides exactly with that given by the pioneering work of Danckwerts {1} using his surface replacement idea. Since the eddy diffusivity can be related to hydrodynamic parameters so should the rate of surface renewal, since a simple relation linking both parameters is found. It is concluded that surface renewal and eddy diffusivity models should not be considered as two different approaches to describe the same phenomenon since they are simply related." @default.
- W1983591349 created "2016-06-24" @default.
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- W1983591349 date "1979-06-01" @default.
- W1983591349 modified "2023-09-24" @default.
- W1983591349 title "Gas absorption accompanied by first-order reversible and irreversible reactions in turbulent liquid films" @default.
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- W1983591349 doi "https://doi.org/10.1016/0017-9310(79)90024-3" @default.
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