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Thermophysics and Aeromechanics

2011 year, number 3

About the effect of microtexture on liquid film formation on a vertical surface

B.V. Perepelitsa
Kutateladze Institute of Thermophysics SB RAS
Keywords: falling liquid film, regular structures, microtexture, waves
Pages: 501-504


Formation of a liquid film on the surface of a cylinder with microtexture was studied visually. The effect of microtexture on evolution of waves on the surface of viscous liquid falling over the outer surface of a vertical cylinder under the action of gravity depending on Reynolds number is shown. The phenomenon of microwave formation on the film surface was determined; the size of these waves is comparable with the microtexture pitch.