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Technical Physics

, Volume 55, Issue 4, pp 473–478 | Cite as

Formation mechanism of a circumferential roller in a drying biofluid drop

  • A. V. Kistovich
  • Yu. D. Chashechkin
  • V. V. Shabalin
Gases and Liquids

Abstract

Using the methods of theoretical thermohydromechanics, a model of protein roller formation at the periphery of a drying biofluid drop is constructed. As basic mechanisms of mass transfer-, temperature-, concentration-, and gravity-induced convections are considered, which produce a global toroidal flow with an ascending fluid filament at the center, dipping fluid along the free surface, and compensatory centripetal flow at the bottom. The shape of the protein roller is analyzed under the assumptions that the material deposition rate is proportional to the (i) material concentration and (ii) material flux.

Keywords

Surface Tension Coefficient Evaporation Time Fixed Interface Total Solute Concentration Hydrodynamic Stage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • A. V. Kistovich
    • 1
  • Yu. D. Chashechkin
    • 1
  • V. V. Shabalin
    • 2
  1. 1.Ishlinskii Institute for Problems in MechanicsRussian Academy of SciencesMoscowRussia
  2. 2.St. Petersburg Research Institute of OtorhinolaryngologyFederal Agency of High-Tech Medical AidSt. PetersburgRussia

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