Vol. 24 No. 3 (2025): Mapana Journal of Sciences
Research Articles

Thermal convection of a Oldroyd-B nanofluid with magnetic effect: Linear and weakly nonlinear analyses

  • Abhishek Kumar,
  • Mala
Abhishek Kumar
Bihar University

Published 2025-09-29

Keywords

  • Porous media,
  • Hydrodynamic stability Thermal convection

Copyright (c) 2025

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Abstract

Onset of convection in a horizontal layer with Oldroyd-B nanofluid investigated. The normal mode technique has been employed to work out the non dimensional governing equations and this leads to eigenvalue problem. The analytical expressions of stationary and oscillatory Rayleigh numbers are obtained. Critical values of Rayleigh number for
the prescribed values of other parameters are obtained. Amplitude equation is derived in weakly nonlinear analysis.

References

  1. Dr. Ravi ragoju, Associate Professor, NIT Goa, ravi@nitgoa.ac.in
  2. Dhananjay Yadav, Associate Professor, University of Nizwa, dhananjayadav@gmail.com
  3. N. Keerthi, Post do fellow, Ulsan National Institute of Science and Technology, 44919, Ulsan, Republic of Korea keerthireddyn2711@gmail.com