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Unsteady thin-film flow over a heated stretching sheet

✍ Scribed by Bidyut Santra; Bhabani S. Dandapat

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 602 KB
Volume: 52
Category: Article
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2008.09.036

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✦ Synopsis

The unsteady flow in a thin viscous liquid film over a heated horizontal stretching surface are analyzed considering the stretching velocity and the temperature distribution in their general forms. An evolution equation for the film thickness, that retains the convective heat transport effects, is derived using longwave theory of thin liquid film and is solved numerically for some representative values of non-dimensional parameters. It is observed that the thermocapillary effects are responsible in shaping the film thickness. Further the thermocapillary effects are more pronounced for lower values of Prandtl number and Biot number.

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