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A revised viscoelastic micropolar nanofluid model with motile micro‐organisms and variable thermal conductivity
Author(s) -
Khan Sami Ullah,
Bhatti Muhammad Mubashir,
Riaz Arshad
Publication year - 2020
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.21797
Subject(s) - nanofluid , thermal conductivity , nusselt number , buoyancy , mechanics , péclet number , homotopy analysis method , materials science , heat transfer , thermodynamics , physics , nonlinear system , reynolds number , quantum mechanics , turbulence
In the present study, a magnetized micropolar nanofluid and motile micro‐organism with variable thermal conductivity over a moving surface have been discussed. The mathematical modeling has been formulated using a second‐grade fluid model and a revised form of the micropolar fluid model. The governing fluid contains micro‐organisms and nanoparticles. The resulting nonlinear mathematical differential equations have been solved with the help of the homotopy analysis method. The graphical and physical features of buoyancy force, micro‐organisms, magnetic field, microrotation, and variable thermal conductivity have been discussed in detail. The numerical results for Nusselt number, motile density number, and Sherwood number are presented with the help of tables. According to the graphical effects, it is noted that the buoyancy ratio and the bioconvection parameter resist the fluid motion. An enhancement in the temperature profile is observed due to the increment in thermal conductivity. Peclet number tends to diminish the motile density profile; however, the viscoelastic parameter magnifies the motile density profile.