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

Abstract

AbstractAt industrial level, the study of nanofluid has a significant role in improving various electrical structures and engineering devices because nanofluid has incredible proficiencies and applications, such as cooling of microelectronic and biomedical devices, vehicles, power generation centers, and so forth. By taking into account such remarkable characteristics of nanofluids, the main focus of this study is to investigate and improve mass and thermal flow for micropolar hybrid nanofluid flow upon a spinning needle. The flow is also exposed to the influence of chemical reaction, Hall current, and viscous dissipation in the presence of the gyrotactic microorganism. The equations that governed the flow system have been solved by the homotopy analysis method. It has been highlighted in this investigation that flow reduces with augmentation in magnetic, material parameters, and nanoparticles volumetric fraction while the thermal profiles have supported this phenomenon. Concentration profiles decline with augmentation in Lewis number, thermophoresis, and chemical reaction parameters. Moreover, motile microorganism opposes by higher values of bioconvection and Lewis numbers.