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<p>The paper explores the mechanism of magnetohydrodynamics (MHD), porous medium resistance, slip flow, Brownian motion, thermophoresis, thermal radiation, and viscous dissipation, on nanofluid flow over a nonlinearly stretching sheet. The Keller-box method is used to solve the transformed nonlinear similarity equations of velocity, temperature and concentration of the nanoparticles. Parametric research work is done extensively to explain the qualitative and quantitative effects of physical parameters. These findings indicate that when the magnetic parameter (MMM) is increased, the Lorentz force increases and therefore silences velocity by almost 35–40 percent of the wall and also increases thermal and concentration boundary layers. On the other hand, permeability (K<sub>p</sub>) increases the velocity of flow through the minimization of drag force resulting in increased wall shear stress. Slip parameter (K<sub>1</sub>) reduces the degree of velocity by 10–15% and also has a minor reduction on the heat transfer rates. In the case of the thermal field, increasing the Prandtl number (Pr) values greatly reduce the actual dimensionless temperature of the thermal field by up to 60 percent at e = 2 though radiation (d) and Eckert number (Ec) serve to warm the field by increasing the intensity of heat retention. The effects of nanoparticles are apparent: Brownian motion (Nb) increases temperature but decreases concentration, and thermophoresis (Nt) increases temperature and nanoparticle migration. Nusselt number quantitatively decreases by almost a quarter with increase of Ec, and Sherwood number increases by 20–30 percent with increase of N<sub>b</sub> and K<sub>1</sub>. Comparison with the literature reveals a good level of agreement of less than 0.05 and ascertains the accuracy of the formulation. This work offers the new understanding of the interplaying effects of MHD, slip, and nanoparticles dynamics that may have practical applicability to porous media heat exchangers, cooling devices, and biomedical transport.</p>

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Coupled momentum, microrotation, and thermosolutal transport in double-stratified MHD micropolar nanofluid flow through porous media with slip, suction/injection, and thermal radiation

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • R. Bhuvana Vijaya,
  • S. K. Gugulothu,
  • Praveen Barmavatu

摘要

The paper explores the mechanism of magnetohydrodynamics (MHD), porous medium resistance, slip flow, Brownian motion, thermophoresis, thermal radiation, and viscous dissipation, on nanofluid flow over a nonlinearly stretching sheet. The Keller-box method is used to solve the transformed nonlinear similarity equations of velocity, temperature and concentration of the nanoparticles. Parametric research work is done extensively to explain the qualitative and quantitative effects of physical parameters. These findings indicate that when the magnetic parameter (MMM) is increased, the Lorentz force increases and therefore silences velocity by almost 35–40 percent of the wall and also increases thermal and concentration boundary layers. On the other hand, permeability (Kp) increases the velocity of flow through the minimization of drag force resulting in increased wall shear stress. Slip parameter (K1) reduces the degree of velocity by 10–15% and also has a minor reduction on the heat transfer rates. In the case of the thermal field, increasing the Prandtl number (Pr) values greatly reduce the actual dimensionless temperature of the thermal field by up to 60 percent at e = 2 though radiation (d) and Eckert number (Ec) serve to warm the field by increasing the intensity of heat retention. The effects of nanoparticles are apparent: Brownian motion (Nb) increases temperature but decreases concentration, and thermophoresis (Nt) increases temperature and nanoparticle migration. Nusselt number quantitatively decreases by almost a quarter with increase of Ec, and Sherwood number increases by 20–30 percent with increase of Nb and K1. Comparison with the literature reveals a good level of agreement of less than 0.05 and ascertains the accuracy of the formulation. This work offers the new understanding of the interplaying effects of MHD, slip, and nanoparticles dynamics that may have practical applicability to porous media heat exchangers, cooling devices, and biomedical transport.