# Free Surface next to a Wet Wall

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The height of a gas-liquid interface near a wet vertical surface is given by , the solution of the nonlinear ODE , where is the capillary length (expressed in unit length), is the surface tension (in force per unit length) and is the liquid density (in unit weight per unit volume). The following boundary conditions apply:

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Contributed by: Housam Binous (March 2011)

Open content licensed under CC BY-NC-SA

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## Details

W. M. Deen, *Analysis of Transport Phenomena*, New York: Oxford University Press, 1998.

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