Impact of inclined magnetic field on non-orthogonal stagnation point flow of CNT-water through stretching surface in a porous medium

Abstract

The magnetohydrodynamic (MHD) nanofluid flow at non-orthogonal stagnation point, with suspended carbon nanotubes in water on a stretched sheet in a permeable media with non-lin-ear thermal radiation is studied. This work aims to explore the inclined magnetic field impacts on normal velocity, tangential velocity and temperature for both types of carbon nanotubes (CNTs). The governing flow equations which are continuity equation, momentum equation and energy equation are reformed into ordinary differential form with the proper boundary conditions using appropriate transformations. The computational solution of the nonlinear ODEs is obtained using the Bvp4c method. The graphs are presented to show the influence of certain physical factors which ranged as magnetic parameter (0.5 ≤ M ≤ 2.5), inclination angle of the magnetic field (п/2 ≤ ζ ≤ п/4), permeability parameter (0 ≤ Ω ≤ 2), volume fraction of nanoparticle (0.03 ≤ Φ ≤ 0.07), stretching ration parameter (0.3 ≤ γ2 ≤ 0.7), Radiation param-eter (0.5 ≤ Nr ≤ 0.9), the heating parameter (0.5 ≤ θw ≤ 1.5) and Prandtl number (5 ≤ Pr ≤ 10). The normal and tangential velocity drops with the augmentation of (M), (ζ) and (Ω), while the temperature rise with enhance of (Nr) and (θw). This study’s findings may be used to manage the heat transmission and fluid velocity rate to achieve the required final product quality in numerous manufacturing processes such as electronic cooling, solar heating, biomedical and nuclear system cooling. Validation against previous research available in the literature in spe-cific situations shows excellent agreement.

Keywords

• Oblique Stagnation Point
• Nanofluid
• Stretching Surface
• Non-Linear Thermal Radiation
• Inclined Magnetic Field
• Porous Medium
• Heat Transfer

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