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Approximate analytical approach to unsteady conducting micropolar fluid flow in the presence of buoyant forces and reactive species
Author(s) -
Dash A. K.,
Mishra S. R.
Publication year - 2020
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.21814
Subject(s) - mechanics , newtonian fluid , fluid dynamics , sink (geography) , porous medium , computation , perturbation (astronomy) , mass transfer , flow velocity , heat transfer , thermodynamics , flow (mathematics) , classical mechanics , materials science , physics , porosity , mathematics , cartography , algorithm , quantum mechanics , composite material , geography
The present analysis studied the significance of free convective flow of an unsteady non‐Newtonian fluid through a semi‐infinite vertical porous plate embedded in a porous medium. The thermal transport equation is enhanced by incorporating the heat source/sink and mass transfer in the chemical reaction parameters. The plate moves at a constant velocity and the velocity near the free stream varies exponentially, which allows perturbation laws. Such a model has relevance to a few industrial and engineering applications. In particular, a micropolar fluid is used as a lubricant in various gadgets, also, in polymeric suspensions as well as in animal blood, the phenomena are used to define the local structure and micromotion of the particles. Transformed nondimensional governing equations are solved analytically employing the perturbation method. Influences of the characterizing parameters are presented via graphs and computations for the coefficients of quantities of interest obtained and shown in a table. Also, validation of the present results in a particular case such as the case of Newtonian fluid is obtained with an earlier study and found to be in good agreement. The major findings are laid down here; an increase in plate velocity enhances the velocity profile near the plate and a destructive chemical reaction restrains the fluid concentration in the entire flow domain.