Impact of Thermo-Diffusion, Diffusion-Thermo effects, and Space Dependent Heat Source on the Micropolar Fluids within a Porous Medium in a Vertical Channel

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Published ID: IJNRD2609014

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H.G. Suguna, B. Sreenivasa Reddy

Micropolar fluid; Porous medium; Vertical channel; Thermo-diffusion; Diffusion-thermo; Space-dependent heat source; Spin-gradient viscosity; Microrotation

The current study examines the convective heat and mass transfer characteristics of micropolar fluid flow through a porous vertical channel, accounting for the combined effects of thermo-diffusion (Soret effect), diffusion-thermo (Dufour effect), space-dependent heat generation/absorption, and spin-gradient viscosity. The governing equations for momentum, rotational momentum, energy, and concentration are developed using buoyancy forces, porous-medium resistance, and micropolar fluid properties. The resulting coupled nonlinear differential equations are numerically solved by using Runge-Kutta shooting technique to investigate the effects of the governing parameters on velocity, microrotation, temperature, and concentration profiles, as well as the skin friction coefficient, Nusselt number, and Sherwood number. The results demonstrate that thermo-diffusion and diffusion-thermo effects significantly modify the thermal and concentration fields, while the space-dependent heat source alters the temperature distribution and heat-transfer rate. Spin-gradient viscosity strongly influences microrotation and velocity, highlighting the importance of micropolar effects in porous-channel transport. The results show that thermo-diffusion (Sr) and diffusion-thermo (Du) effects have a major impact on the thermal and concentration fields, whereas a space-dependent heat source (A1) changes the temperature distribution and heat transfer rate. Spin-gradient viscosity () has a considerable influence on microrotation and velocity, emphasising the relevance of micropolar effects in porous channel transport.

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H.G. Suguna & B. Sreenivasa Reddy (September-2026). Impact of Thermo-Diffusion, Diffusion-Thermo effects, and Space Dependent Heat Source on the Micropolar Fluids within a Porous Medium in a Vertical Channel. INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 11(9), a154-a168. https://ijnrd.org/papers/IJNRD2609014.pdf

Volume 11 Issue 9, September-2026

Pages : a154-a168

Paper Reg. ID: IJNRD_328209

Published Paper Id: IJNRD2609014

Research Area: Applied Mathematics

Author Type: Indian Author

Country: Kadapa, Andhra Pradesh, India

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