THE ONSET OF CONVECTION IN A SUSPENSION OF GRAVITACTIC MICROORGANISMS IN A HORIZONTAL LAYER

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Abstract

The onset of bioconvection in a non-isothermal suspension of gravitactic microorganisms in a horizontal layer is investigated. It is shown that oscillatory instability is possible in the case of positive gravitaxis of microorganisms. The dependences of bioconvective thresholds, the critical wave numbers and the frequency of neutral oscillations on the Peclet number, as well as the Lewis number, and the concentration Rayleigh number are obtained and analyzed.

About the authors

B. L Smorodin

Perm State University

Email: bsmorodin@yandex.ru
Perm, Russia

A. M Mezentseva

Perm State University

Email: mez.sasha60@gmail.com
Perm, Russia

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