Double dispersed bioconvective Casson nanofluid fluid flow over a nonlinear convective stretching sheet in suspension of gyrotactic microorganism

Abstract

Microorganisms play a vital role in understanding the ecological system. The motions of micororganisms are self‐propelled while the impact of thermophoresis and Brownian motion property of nanoparticle shows more challenges in biotechnological and medical applications. The present problem is based on the understanding of double‐dispensed bioconvection for a Casson nanofluid flow over a stretching sheet. Suction phenomenon is introduced at the surface of the stretching sheet along with the convective boundary condition. The convection and movement of the microorganisms are assisted by an applied magnetic field, nonlinear thermal radiation, and first‐order chemical reaction. The governing equations are highly coupled and thus we used the spectral quasilinearization method to solve the governing equations. The study of the residual errors on the systemic parameters had given a confidence with the present results. The final outcomes are displayed through graphs and tables. The thermal dispersion coefficient shows a positive response in the temperature while a similar response is observed for the concentration with solutal dispersion coefficient. The response is reversible for the heat transfer rate at the surface with thermal dispersion coefficient. The density of the motile microorganism at the surface decreases with increase in the Casson number, thermal dispersion coefficient, and solute dispersion coefficient, while an opposite phenomenon was observed with increase in the density ratio of the motile microorganism.

Exploring the magnetohydrodynamic stretched flow of Williamson Maxwell nanofluid through porous matrix over a permeated sheet with bioconvection and activation energy

“…Sharma et al 18 studied the impacts of a chemical change and a heat source on magneto-hydrodynamic assorted convective mass and heat transfer flow over a vertical plate. For a Casson nanofluid stream over a stretching/shrinking sheet, magagula et al 19 tested the influence of an applicable magnetic field, nonlinear thermal radiation and first-order chemical reaction double dispensed bioconvection. Shaw et al 20 presented a homogeneous model for oxytactic microbial bioconvection in a non-Darcy permeable material.…”

Bioconvection flow in accelerated couple stress nanoparticles with activation energy: bio-fuel applications

“…In another investigation Shaw et al 34 utilized the soret features in magnetized flow of nanofluid in presence of gyrotactic microorganisms. Magagula et al 35 inspected the double dispersed flow of Casson nano-material containing gyrotactic microorganisms with additional features of first order chemical reaction and nonlinear thermal radiation.…”

Radiation and Multiple Slip Effects on Magnetohydrodynamic Bioconvection Flow of Micropolar Based Nanofluid over a Stretching Surface

“…Ansari et al [9] studied the gyrotatic microorganism effects and the effects of nano-particles in magnetohydrodynamic Casson fluid. Magagula with his co-workers [10] studied double dispersion with Casson fluid as a base fluid in the presence of gyrotatic microorganism. Khaled et al [11] analyzed the application of bioconvection over a moving surface by using a homotopy analysis scheme.…”