Effect of Magnetic field and Solute Particles on couple stress ferromagnetic micropolar fluid in porous medium

This study investigates the effect of a magnetic field and solute particles on the stability and flow behavior of a couple stress ferromagnetic micropolar fluid within a porous medium. Mathematical formulation incorporates governing equations that account for couple stress, micropolar effects, magnetization, and solute concentration variations. The stability analysis is performed using the normal mode method to determine the influence of external magnetic fields and solute particles on convective motion and heat transfer. The impact of parameters such as couple stress coefficient, magnetic field intensity, solute concentration gradient, and porous medium permeability is analyzed using analytical and numerical techniques. The findings indicate that the applied magnetic field enhances system stability by suppressing convective instabilities, while solute concentration variations modify the threshold for instability. The research provides valuable insights for industrial and geophysical applications involving magnetohydrodynamics (MHD) flows, porous media transport, and ferrofluid-based technologies.