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Linear and weakly non-linear stability analysis of oscillatory convection in rotating ferrofluid layer

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  • Dhiman, Joginder Singh
  • Sood, Sumixal

Abstract

In the present paper, the problem of ferroconvection in the presence of uniform vertical rotation is considered to investigate the linear and weakly non-linear oscillatory stability. Two-dimensional convective roll instability is discussed with finite-amplitude disturbances. For linear stability, as a first-order problem, the expressions for Rayleigh numbers for stationary and oscillatory convection are derived and the effects of Coriolis force and magnetic parameters on the onset of ferromagnetic convection are studied, numerically. In weakly nonlinear oscillatory analysis, the second-order and third-order stability problems are discussed and the complex Ginzburg-Landau equation describing the amplitude of convection cell in rotating ferrofluid is derived and consequently, the expression for Nusselt number representing the heat transfer rate is obtained. From the present analysis, we observed that the rotation has the usual stabilizing effect on the linear stability in ferroconvection, however, the magnetic number (M1) and the measure of nonlinearity of magnetization (M3) both have a destabilizing effect on the onset of linear instability. Also, we found that for non-linear convection, the heat transfer rate (the Nusselt number) increases with increasing values of Taylor number, magnetic number, and the measure of nonlinearity of magnetization.

Suggested Citation

  • Dhiman, Joginder Singh & Sood, Sumixal, 2022. "Linear and weakly non-linear stability analysis of oscillatory convection in rotating ferrofluid layer," Applied Mathematics and Computation, Elsevier, vol. 430(C).
    • Handle: RePEc:eee:apmaco:v:430:y:2022:i:c:s0096300322003137
    DOI: 10.1016/j.amc.2022.127239
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    Cited by:

    1. Hingis, Y.M. Gifteena & Muthtamilselvan, M., 2024. "Ginzburg–Landau equations for the salt fingering region with the onset of microorganisms," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 222(C), pages 90-109.
    2. Saša Nježić & Jasna Radulović & Fatima Živić & Ana Mirić & Živana Jovanović Pešić & Mina Vasković Jovanović & Nenad Grujović, 2022. "Chaotic Model of Brownian Motion in Relation to Drug Delivery Systems Using Ferromagnetic Particles," Mathematics, MDPI, vol. 10(24), pages 1-19, December.

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