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Numerical study of hydrothermal and mass aspects in MHD driven Sisko-nanofluid flow including optimization analysis
Xinhua Wang1, Ghulam Rasool1,2, Anum Shafiq3,4
1Institute of Intelligent Machinery, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China.
Scientific Reports
|May 15, 2023
Summary
This study analyzes Sisko-nanofluid flow over a stretching surface, incorporating porous media and MHD effects. Results show porosity impacts velocity, while thermal radiation, Brownian diffusion, and thermophoresis influence heat transfer.
Area of Science:
- Fluid Dynamics
- Nanotechnology
- Heat Transfer
Background:
- Investigates steady, incompressible, 2D Sisko-nanofluid flow on a stretching/shrinking surface.
- Incorporates porous medium, Magnetohydrodynamics (MHD), thermal radiation, Brownian diffusion, and thermophoresis.
- Governing equations derived from Navier-Stokes model for 2D systems.
Purpose of the Study:
- Analyze Sisko-nanofluid behavior under various physical conditions.
- Optimize heat transfer and skin-friction factors using response surface methodology.
- Evaluate the impact of porosity, MHD, radiation, and nanoparticle parameters.
Main Methods:
- Transformed PDEs into a 1D system using suitable transformations.
- Solved using the Galerkin weighted residual method, validated by the spectral collocation method.
- Performed optimization and sensitivity analysis using response surface methodology.
Main Results:
- Porosity parameter significantly affects velocity profiles and boundary layer thickness.
- Increased porosity leads to reduced velocity and boundary layer thickness.
- Heat transfer sensitivity decreases with increased thermophoresis (Nt) and Brownian diffusion (Nb) parameters at medium thermal radiation.
Conclusions:
- The study provides insights into nanofluid flow dynamics relevant to industrial applications.
- Optimization and sensitivity analyses reveal key parameter influences on heat transfer and friction.
- Findings are applicable to elongation processes and industries like textiles and glass manufacturing.
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