Effect of varying the temperature dependent viscosity of Maxwell nanofluid flow near a sensor surface with activation enthalpy

T. Salahuddin, Mair Khan, Zoehib Mahmood, Muhammad Awais, Besam Al Alwan and M. Afzal

Chaos, Solitons & Fractals, 2025, vol. 194, issue C

Abstract: The main focuses of this research work relays on the heat transfer rate, mass and velocity of Maxwell nanofluid flow in a sensor surface with a vertical channel formed by two infinite parallel plates. Researchers worldwide are working to enhance the use of nanofluids for a range of industrial applications, therefore, the Buongiorno nanofluid model is used to develop the heat and mass transport equations. The natural convection is used to analyze its impression on flow of Maxwell fluid because many transport mechanisms in engineering devices is generated by mixed convection flows. Furthermore, the investigation of Brownian diffusion, thermophoresis, enthalpy, activation energy, Soret and Dufour factors for such scenario is novel and important in many industrial disciplines. To obtain a non-linear system of differential equations, appropriate modified transformations are used. A numerical approach is used to solve the problem. For the concerned profiles, the dimensionless parameters are graphically displayed and described. The results show that buoyancy forces oppose the motion of the fluid so velocity field declines. The momentum boundary layer decays with growing values of permeability velocity, variable viscosity parameter and Maxwell number. The reverse trend is observed for Brownian diffusion and thermophoresis parameter Thermal boundary layer receives augmentations for higher values of Brownian diffusion, whereas the decline is noticed in concentration field. Soret factor and Dufour effect heighten the graph of temperature and concentration.

Keywords: Maxwell fluid; Nanofluid; Variable viscosity; Enthalpy; Soret dufour effects; Sensor surface; Vertical channel (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:194:y:2025:i:c:s0960077925002607

DOI: 10.1016/j.chaos.2025.116247

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