Film models for transport phenomena with fog formation: the classical film model

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Brouwers, H.J.H. and Chesters, A.K. (1992) Film models for transport phenomena with fog formation: the classical film model. International journal of heat and mass transfer, 35 (1). pp. 1-11. ISSN 0017-9310

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Abstract:In the present analysis the classical film model (or film theory) is reviewed and extended. First, on the basis of a thorough analysis, the governing equations of diffusion, energy and momentum of a stagnant film are derived and solved. Subsequently, the well-known correction factors for the effect of suction/injection on mass, heat and momentum transfer are derived. Next, employing global balances of mass, energy and momentum, the film model is applied to channel flow. This application yields a new expression for the pressure drop and hence it is compared extensively with experimental and theoretical results of previous investigators, yielding good agreement. The onset of fog formation in a binary mixture, both in the transferring film and/or in the bulk, is explained graphically with the help of the relation between temperature and vapour mass fraction and the saturation line of the vapour.

Item Type:Article
Copyright:© 1992 Elsevier
Faculty:
Engineering Technology (CTW)
Link to this item:http://purl.utwente.nl/publications/20661
Official URL:http://dx.doi.org/10.1016/0017-9310(92)90003-B
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Metis ID: 124271