The Impact of Couple Stress on Thermosolutal Instability of Visco-Elastic Nanofluids in Porous Medium

Authors

  • S. K. Pundir Department of Mathematics, S. D. (P.G.) College Muzaffarnagar, U.P.- 251001, India
  • M. Kumar Department of Mathematics, S. D. (P.G.) College Muzaffarnagar, U.P.- 251001, India
  • R. Pundir Department of Mathematics, S. D. (P.G.) College Muzaffarnagar, U.P.- 251001, India

DOI:

https://doi.org/10.3329/jsr.v17i3.75627

Abstract

This work aims to investigate the impact of couple stress on the thermosolutal convection of viscoelastic nanofluid saturated in the porous medium. The rheological behavior of a viscoelastic nanofluid is characterized by the Rivlin-Erickson model. We study the linear stability analysis using the normal mode analysis method and examined analytically and graphically using MATLAB the impact of non-dimensional factors such as the couple stress, the concentration Rayleigh number, the solutal Rayleigh number, the thermos-nanofluid Lewis number, the thermosolutal Lewis number, Dufour and the Soret parameters and found that the couple stress, nanofluid Lewis number and modified diffusivity ratio enhance the instability of thermosolutal convection.

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Published

2025-09-01

How to Cite

Pundir, S. K., Kumar, M., & Pundir, R. (2025). The Impact of Couple Stress on Thermosolutal Instability of Visco-Elastic Nanofluids in Porous Medium. Journal of Scientific Research, 17(3), 703–716. https://doi.org/10.3329/jsr.v17i3.75627

Issue

Vol. 17 No. 3 (2025)

Section

Section A: Physical and Mathematical Sciences

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

© Journal of Scientific Research

Creative Commons License

Articles published in the "Journal of Scientific Research" are Open Access articles under a Creative Commons Attribution-ShareAlike 4.0 International license (CC BY-SA 4.0). This license permits use, distribution and reproduction in any medium, provided the original work is properly cited and initial publication in this journal. In addition to that, users must provide a link to the license, indicate if changes are made and distribute using the same license as original if the original content has been remixed, transformed or built upon.