The study of amplitude equations for longwave Marangoni convection in a binary layer

Authors

  • Сергей Викторович Шкляев (Sergey V. Shklyaev) Institute of Continuous Media Mechanics
  • Андрей Олегович Иванцов (Andrei O. Ivantsov) Institute of Continuous Media Mechanics; Perm State University

DOI:

https://doi.org/10.17072/1994-3598-2016-1-55-63

Abstract

The work deals with the study of the long-wave thermal and solutocapillary convection in a layer of a binary mixture. Despite the long research history of the convection in a binary mixture, the interest to these studies does not decrease, moreover, it becomes more remarkable, especially in problems of the convection in colloidal nanosuspensions and the thin films. The constant heat flax is maintained at the lower boundary of the layer. This boundary condition is corresponded to the situation when the thermal conductivity of the substrate is much smaller than the thermal conductivity of the binary mixture. The free surface of the layer is supposed to be non-deformable and at the same time the surface tension depends on the temperature and the solute concentration. Nonlocal nonlinear amplitude equations for longwave Marangoni convection in a binary layer are obtained. The weakly nonlinear analysis is carried out for pattern selection on the lattices of three types: rhombic (in Fourier space), square and hexagonal. The conditions of stability of finite amplitude structures are found.Received 24.03.2016; accepted 08.04.2016

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Published

2017-03-04

How to Cite

Шкляев (Sergey V. Shklyaev) С. В., & Иванцов (Andrei O. Ivantsov) А. О. (2017). The study of amplitude equations for longwave Marangoni convection in a binary layer. Bulletin of Perm University. Physics, (1(32). https://doi.org/10.17072/1994-3598-2016-1-55-63

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Section

Regular articles