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Thermochemistry and viscous heat dissipative effects on unsteady upper‐convected Maxwell fluid flow past a stretching vertical plate with thermophysical variables
Author(s) -
Idowu Amos S.,
Olabode John O.
Publication year - 2021
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.22013
Subject(s) - thermal diffusivity , thermal conductivity , thermodynamics , viscosity , mechanics , buoyancy , dissipative system , nusselt number , ordinary differential equation , boundary layer , lewis number , physics , classical mechanics , differential equation , mass transfer , quantum mechanics , reynolds number , turbulence
In this paper, unsteady upper‐convected Maxwell fluid flow with variability in viscosity, thermal conductivity, and mass diffusivity is presented. The effects of chemical reaction, internal heat generation, and viscous dissipation with respect to variability properties were explored. The governing partial differential equations were transformed with the appropriate similarity transformation variables into nonlinear coupled ordinary differential equations. The spectral collocation method was used to solve the resulting ordinary differential equations. Hence, the effects of various parameters such as temperature‐dependent viscosity and thermal conductivity, mass diffusivity parameters among others on velocity, temperature, concentration, skin friction, local heat and mass transfers were presented in graphs and tables. It is seen that heat and molecules of the fluid disperse faster as a result of destructive chemical reaction, while, the temperature‐dependent viscosity and thermal conductivity gave increasing profiles of the momentum and thermal boundary layer. The viscous dissipative parameter generates heat and yields a buoyancy force in consequence.