Combined effects of Wall Transpiration and Heat Generation/Absorption in a Reactive MHD Casson Nanofluid Past a Cylinder in an Anisotropic Porous Medium

International Journal of Thermal Engineering

© 2025 by SSRG - IJTE Journal

Volume 11 Issue 3

Year of Publication : 2025

Authors : Falomo Bukola Oluwatosin, Fenuga Olaugbenga John, Abiala Israel Olutunji

10.14445/23950250/IJTE-V11I3P102

How to Cite?

Falomo Bukola Oluwatosin, Fenuga Olaugbenga John, Abiala Israel Olutunji, "Combined effects of Wall Transpiration and Heat Generation/Absorption in a Reactive MHD Casson Nanofluid Past a Cylinder in an Anisotropic Porous Medium," SSRG International Journal of Thermal Engineering, vol. 11,  no. 3, pp. 9-29, 2025. Crossref, https://doi.org/10.14445/23950250/IJTE-V11I3P102

Abstract:

This work examines the combined effects of wall transpiration and heat generation/absorption on the unsteady Magnetohydrodynamic Flow of a chemically reactive Casson nanofluid over a cylinder embedded in an anisotropic porous
medium. The model incorporates thermal radiation, Joule heating, Brownian motion, thermophoretic diffusion, higher-order chemical reactions, and an induced magnetic field, making the model relevant to applications such as porous resistors and thermal processes in food processing silos. Using similarity transformations, the governing nonlinear partial differential equations are reduced to ordinary differential equations and solved analytically with the Homotopy Perturbation Method
(HPM). The results indicate that increasing the Casson parameter (β) and the Slip Parameter ζ enhances flow velocity and decreases temperature due to weakened viscous resistance. Higher radiation parameter Rd and positive heat generation
intensify the thermal field. Suction promotes cooling and mass transfer, while injection exhibits an opposite influence. Moreover, a larger Darcy Number (Da), Anisotropic Permeability (Γ), and curvature strengthen convective transport and thermal regulation. Magnetic Parameters (Q, Λ, At) affect field intensity and transient flow behaviour. Overall, the study demonstrates that the interplay between wall transpiration and heat generation/absorption provides effective control over flow structure and thermal performance, offering valuable insights for optimizing industrial thermal-fluid operations and MHDbased energy systems.

Keywords:

Heat Generation, Anisotropic Porous Medium, Nanofluid, Magnetohydrodynamic.

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