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Landau-Levich-Derjaguin picture |
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Landau-Levich-Derjaguin picture [¦lan‚dȧu̇ ¦lev·ich ′der·zhə‚gēn ‚pik·chər]
(fluid mechanics) A theory of fluid coating at low velocities, according to which the thickness of the film that forms when a solid is drawn out of a bath results from a balance between (1) the effects of viscosity, which causes a macroscopic entrainment of liquid by the solid, and (2) surface tension, which resists the film entrainment, so that the film thickness is proportional to the capillary number raised to the 2/3 power. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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