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Features of viscosity wave currents near to fluctuating firm borders with various adhesive properties

B.E. Grachev

Memoirs of the Faculty of Physics 2014. N 5.

  • Article
Annotation

It is the result of comparison of experimental researches of a field of viscosity wave current near to several spheres with the surfaces possessing various adhesive properties. The liquid is glycerol with kinematic viscosity ν =6,4 sm2/s under normal conditions. Here as a measure of the adhesion force is the contact angle. With increase in value of oscillatory velocity of a sphere in case of the waterproof surface (graphite, paraffin) the observable field of current velocity of becomes essentially distinct from a field near to a surface possessing hydrophilic properties (the metal, the painted surface) with other things being equal. This difference of the velocity field for the hydrophobic surface currents can be explained by a slippage of the liquid.

Received: 2014 November 11
Approved: 2014 December 21
PACS:
62.10.+s Mechanical properties of liquids
66.20.Cy Theory and modeling of viscosity and rheological properties, including computer simulation
Authors
B.E. Grachev
The St.-Petersburg State University, Faculty of Physics, Radio Physics Chair. St.-Petersburg, Old Peterhof, the Ulyanovskaya st., 3, Russia, 198504
Issue 5, 2014

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