Vol.26, No.1, 2026, pp. 93–100
https://doi.org/10.69644/ivk-2026-01-0093

STATIONARY CONVECTION ON THERMOSOLUTAL CONVECTION IN JEFFREY NANOFLUID SATURATED IN A POROUS MEDIUM FOR RIGID-RIGID AND RIGID-FREE BOUNDARY CONDITIONS

Pushap Lata Sharma* , Praveen Lata , Ajit Kumar

Department of Mathematics & Statistics, Himachal Pradesh University, Summer Hill, Shimla-171005, INDIA

P.L. Sharma https://orcid.org/0000-0001-5848-9214 ; P. Lata https://orcid.org/0009-0002-9726-8814 ;

A. Kumar https://orcid.org/0000-0002-5888-3761 , *email: pl_maths@yahoo.in

 

Abstract

This work examines the stationary convection on thermosolutal convection in a Jeffrey nanofluid saturated in a porous medium, surrounded by rigid-rigid and rigid-free surfaces. Brownian motion effects and thermophoresis assumptions are now included in the governing equations. The impacts of numerous variables are derived by the application of normal mode techniques and linear stability analysis. Thermo-nanoparticle Lewis number, Soret parameter, modified diffusivity ratio and porosity have a stabilising impact on both boundary conditions, that delays the beginning of convection, while the other parameters like solutal Rayleigh number, Dufour parameter, thermosolutal Lewis number, concentration Rayleigh number, Jeffrey parameter have a destabilising impact on both boundary conditions, that enhances the onset of convection. The study of thermosolutal convection in Jeffrey nanofluid can improve the design of nanofluid-based cooling systems for electronics, energy storage and other industrial applications.

Keywords: • Brownian motion • Jeffrey nanofluid • porous medium • thermosolutal convection 

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