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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

INFLUENCE OF THE STEFAN-NUSSELT EFFECT ON THE MASS TRANSFER RATE-APPLICATIONS TO MOVING BOUNDARY PROBLEMS

Get access (open in a dialog) DOI: 10.1615/IHTC6.90
pages 363-369

要約

A flux induced velocity, frequently referred to as the Stefan-Nusselt effect, exists in all mass transfer processes, including moving wall and stationary wall processes. The Stefan-Nusselt effect is described.

In moving wall problems the rate of wall movement is shown to depend on the physical condition of restraint and the density ratio of the adjacent phases. The flux, as observed by an observer moving with the interface velocity (w) is shown, in general, to be independent of the condition of restraint and the density ratio.

A solution is presented using mobile coordinates which permits the results to be applicable to both moving and stationary wall problems. The solution is used to establish a criterion for determining when the Stefan-Nusselt effect aids and when it hinders mass transfer. The criterion is shown to sometimes be in conflict with existing criterion.