On doubly stratified bioconvective transport of Jeffrey nanofluid with gyrotactic motile microorganisms

Abstract

Nanofluids have already proven great potential in the thermal amplification of several manufacturing industries and have been widely employed in energy technologies in recent times. Therefore, the current framework investigates the characteristics of the Jeffrey nanofluid flow with the influence of activation energy and motile microorganisms over a sheet is considered. The influence of the magnetic field is another important physical parameter in the flow analysis and has been regarded in this review. The remarkable properties of nanofluid are demonstrated by thermophoresis and Brownian motion characteristics. Thermophoresis has relevance in mass transport processes in many higher temperature gradient operating systems. An appropriate similarities transformation is utilized make convenient to partial differential equation into ordinary differential equations. The well-known shooting tactic is utilized to estimate numerical outcomes of obtained ordinary system of flow. The governing dimensionless equations are integrated subject to the aid of the bvp4c scheme in the built-in software of MATLAB to find out the solution. The procedure assumed employing MATLAB. The characteristics of physical parameters against the velocity of fluid, temperature, concentration, and motile microorganisms are elaborated through graphs and tables. The dynamic physical declaration of attained results reveals that buoyancy ratio parameter and bioconvection Rayleigh number plays a vibrant role in the declining flow of Jeffery nanofluid while contrasting nature is analyzed for mixed convection parameter. The increasing behavior of temperature is observed for larger variations of heat sink/source parameters and thermophoresis parameter while it shows conflicting nature for increasing values of Prandtl number. The concentration of nanoparticle is reduced with the advanced values of Prandtl number, Lewis number and Brownian motion, perceived from the results. The mounting valuation of the Peclet number and Bioconvection Lewis number caused a reduction in motile microorganism concentration. The envisaged hypotheses could be beneficial for modifications to extrusion systems, bio-mimetic systems, efficient energy generation, bio-molecules and improved production systems.

Keywords

• Jeffrey nanofluid
• Heat generation/absorption
• Motile microorganisms
• Bio-convection
• Activation energy
• MATLAB