Effect of Time-Dependent Sinusoidal Boundary Temperatures on the Onset Of Ferroconvection in a Porous Medium

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Authors

  • ,IN
  • ,IN
  • ,IN

DOI:

https://doi.org/10.18311/jmmf/2022/30672

Keywords:

Ferrofluid, porous media, magnetic field, temperature modulation.

Abstract

The effect of temperature modulation on the onset of Darcy ferroconvection in a horizontal porous layer heated from below is investigated. The analysis is based on the assumption that the amplitude of the temperature modulation is small enough compared with the imposed steady temperature difference. The effect of the oscillating temperature field is treated by a perturbation expansion in powers of the amplitude of the applied field. The effect of magnetic parameters, Vadasz number and temperature modulation in the cases of symmetric, asymmetric and bottom wall modulation, were discussed. The study divulges that subcritical motion exists for symmetric temperature modulation for low frequency. In the case of asymmetric and bottom wall modulation only supercritical motion exists.

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Published

2022-07-12

How to Cite

Thomas, N. M., Mathew, S., & Maruthamanikandan, S. (2022). Effect of Time-Dependent Sinusoidal Boundary Temperatures on the Onset Of Ferroconvection in a Porous Medium. Journal of Mines, Metals and Fuels, 70(3A), 78–83. https://doi.org/10.18311/jmmf/2022/30672

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Articles
Received 2022-07-12
Accepted 2022-07-12
Published 2022-07-12

 

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