Bio-convective and Chemically Reactive Hybrid Nanofluid Flow Upon a Thin Stirring Needle with Viscous Dissipation

Abstract

In this work the thermal analysis for bio-convective hybrid nanofluid flowing upon a thin horizontally moving needle is carried out. The chemical reaction and viscous dissipation has also considered for flow system in the presence of microorganism. The hybrid nanoparticles comprising of Copper (Cu) and Alumina (Al2O3) are considered for current flow problem. Mathematically the flow problem is formulated by employing the famous Buongiorno’s model that will also investigate the consequences of thermophoretic forces and Brownian motion upon flow system. Group of similar variables is used to transform the model equations into dimensionless form and have then solved analytically by homotopy analysis method (HAM). It has established in this work that, flow of fluid declines due to increase in bioconvection Rayleigh number, buoyancy ratio and volume fractions of nanoparticles. Thermal flow grows due to rise in Eckert number, Brownian, thermophoresis parameters and volume fraction of nanoparticles. Concentration profiles increase due to growth in Brownian motion parameter and reduces due to increase in thermophoresis parameter and Lewis number. Motile microorganism profile declines due to augmentation in Peclet and bioconvection Lewis numbers. Moreover, the percentage enhancement in the drag force and rate of heat transfer using nanofluid and hybrid nanofluids are observed and discussed. The hybrid nanofluid increases the skin friction and heat transfer rate more rapidly and efficiently as compared to other traditional fluids. A comparison of the present study with the existing literature is also conducted with a closed agreement between both results for variations in thickness of the needle.

Mixed Convection Flow Along Vertical Thin Needles Containing Gyrotactic Microorganism with Variable Heat, Mass and Motile Microorganism Flux

“…Salleh et al [49] then studied stability analysis to understand the additional impact of the heat source and chemical reaction in a nanofluid flow towards a slender needle. Very recently Waini et al [50] and Khan et al [51] studied hybrid nanofluid flow through the thin needle.…”

Thermally dissipative micropolar hybrid nanofluid flow over a spinning needle influenced by Hall current and gyrotactic microorganisms

“…The application of this velocity slip condition has augmented all the three profiles of the flow system namely, flow, thermal, and concentration profiles. Khan et al [10][11][12][13] have conducted a tremendous investigation for heat transfer and thermal flow regarding nanofluids by considering different flow conditions using various geometrical views. Sulochana et al 14 have investigated the transpiration impact upon stagnation point flow for nanoparticles using the famous Buongiorno model over a stretching sheet.…”