Investigation of MHD radiative casson micropolar hybrid nanofluid over exponential curved stretching sheet

Abstract

In this analysis, we deliberated a couple stress tensor of Casson micropolar hybrid nanofluid over an exponential curved stretching surface. The impact of joule heating and radiation has been observed. The Laurent forces have been implemented on the normal fluid flow at the stretching surface. Two models of hybrid nanofluid, namely the Xue and Yamada Ota models, have been discussed. The solid nanoparticles of $MgO\left(\text{Magnesium}\text{Oxide}\right)$ and $AG\left(Silver\right)$ have considered having base fluid $EG$ (Ethylene Glycol). Using the above considerations, we have constructed a mathematical model from governing equations of temperature, momentum, and micro rotational equations. This model has developed in the form of partial differential equations (PDEs). Furthermore, the model has been reduced to nonlinear ordinary differential equations by implementing the transformations. The reduced mathematical model has been cracked by a numerical scheme. The results are defined in the form of graphics and tabular data. As the micropolar factor increases, the rotational effects at the surface increase, reducing the velocity of fluid velocity. On an exponentially curved stretching sheet, the enhanced micropolar effects reduce momentum transfer, decreasing velocity. The fluid viscosity becomes high due to an increment in shear thickening, which forces the fluid to reduce its velocity. The flow experiences additional stretching and curvature-induced effects on an exponentially curved stretching sheet. The fluid motion near the stretching surface is slowed due to increased viscous forces and reduced momentum transfer. Overall, the Yamada Ota model has achieved more temperature as compared to the Xue model.