On the influence of the concentration dependence of viscosity on the convective instability of the horizontal layer of colloidal solution

Authors

  • Иван Николаевич Черепанов (Ivan N. Cherepanov) Perm State University
  • Борис Леонидович Смородин (Boris L. Smorodin) Perm State University

DOI:

https://doi.org/10.17072/1994-3598-2019-1-26-31

Keywords:

colloid suspension, convection, concentration dependence of viscosity

Abstract

The dependence of the convective instability of colloidal solution on the concentration dependence of viscosity is investigated. The consideration is carried out in the framework of the Boussinesq approximation, on the basis of a model that takes into account the dependence of the viscosity of the liquid and the thermodiffusion flux on the local value of the impurity concentration. The boundaries of instability and characteristics of critical disturbances are determined. It is shown that in the case of negative thermal diffusion, an increase in the concentration coefficient leads to a lower convection threshold and a decrease in the critical wave number, the frequency of neutral oscillations is practically unchanged.

References

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Published

2019-05-24

How to Cite

Черепанов (Ivan N. Cherepanov) И. Н., & Смородин (Boris L. Smorodin) Б. Л. (2019). On the influence of the concentration dependence of viscosity on the convective instability of the horizontal layer of colloidal solution. Bulletin of Perm University. Physics, (1). https://doi.org/10.17072/1994-3598-2019-1-26-31

Issue

Section

Regular articles