Applied Mathematics and Mechanics (English Edition) ›› 2025, Vol. 46 ›› Issue (6): 1107-1124.doi: https://doi.org/10.1007/s10483-025-3260-7

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Thermal radiation impact on hybrid nanocomposite flow in stretchable channels: a Darcy-Forchheimer model with the Taylor wavelet approach

B. J. GIREESHA(), K. J. GOWTHAM   

  1. Department of PG Studies and Research in Mathematics, Kuvempu University, Shankaraghatta 577451, India
  • Received:2024-12-19 Revised:2025-04-13 Published:2025-06-06
  • Contact: B. J. GIREESHA E-mail: bjgireesu@gmail.com

Abstract:

The study of stretching surfaces has garnered significant attention due to its importance in a wide range of industrial and engineering functions, including the drawing of wires and plastic films, shrink film production, polymer sheet extrusion, the manufacturing of glass fibers, and the manufacturing of polyester heat-shrink tubing. This research incorporates a Darcy-Forchheimer porous medium to account for the effects of porosity. The governing equations are transformed into a boundary value problem and solved semi-analytically using the Taylor wavelet method. The effects of various parameters are depicted through graphical analyses. The results show that for both converging and diverging stretching surfaces, an increase in the porosity parameter causes a decrease in the velocity field. Additionally, higher Reynolds numbers enhance inertial effects, leading to more pronounced velocity fluctuations. Stretching causes a consistent drop in velocity toward the center and an increase close to the walls in both types of channels, indicating that the volume percentage of nanoparticles influences the heat distribution. Notably, stretching induces a marked temperature drop at the channel's center.

Key words: Darcy-Forchheimer flow, stretching wall, porous medium, convergent and divergent channel

2010 MSC Number: 

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