Novel thermal aspects of hybrid nanofluid flow comprising of manganese zinc ferrite MnZnFeO, nickel zinc ferrite NiZnFeO and motile microorganisms

Abstract

An enhancement in heat transfer due to nanofluids is essentially required in various thermal systems. Hybrid nanofluids possess high thermal conductivity and, have ability to embellish and enhance the thermal strength of common fluids. Our concern in this paper is to examine the innovative attributes of hybrid nanofluids like Manganese zinc ferrite ( MnZnFe 2 O 4 ) and Nickel zinc ferrite ( NiZnFe 2 O 4 ) in the bio-convective flow of motile gyrotactic microorganisms subject to Darcy Forchheimer medium. The effect of activation energy has also been taken into account. Mathematical treatment is carried out via MATLAB software. The use of MnZnFe 2 O 4 - NiZnFe 2 O 4 /H 2 O exhibits improved thermal characteristics which desirably enhance the volume fraction of hybrid nanoparticles. A comparison is provided in order to appraise the efficiency of code. The numerical results are interpreted by means of graphs and tables. The hybrid composition of zinc ferrites in the base fluid together with motile microorganisms substantially improved the heat transfer rate. It can be deduced from the culminations of the present work that the Forchheimer parameter and the bioconvection Peclet number cause a reduction in the velocity of fluid and density distribution of motile gyrotactic microorganisms respectively.