Homogeneous–heterogeneous reactions in flow past a horizontal circular cylinder with an induced magnetic field and nonlinear thermal radiation

Abstract

In this study, we investigate the steady, two-dimensional, incompressible viscous boundary layer flow of an electrically conducting Casson fluid over a horizontal circular cylinder. The cylinder is impermeable and the flow is assumed to be subject to homogeneous-heterogeneous reactions. The homogeneous-heterogeneous reactions are also assumed to have unequal diffusion coefficients. The novelty in this study is in the consideration of a nonlinear radiative flux together with Joule heating and an induced magnetic field. The magnetodynamic pressure gradient in induced magnetic flows is important as it gives insights into the boundary layer characteristics. The flow velocity and the magnetic field in the free stream are assumed to be uniform and directed vertically over the cylinder. The partial differential equations are solved using the bivariate spectral quasi-linearization method. An analysis and comparison of results with existing literature are provided. Among the findings, we show, inter alia, that the reactants dominate while the autocatalysts have a negligible impact on the flow progression. The skin friction coefficient decreases with an increase in the Casson parameter and increases when the Joule heating parameter is increased. The rate of heat transfer increases with increasing the Casson parameter and decreases when the Joule heating parameter is increased.bivariate spectral quasi-linearization method, homogeneous-heterogeneous, induced magnetic field, nonlinear radiative flux, unequal diffusivities

Mixed convection hybrid nanoliquid flow over an exponentially stretching rough (smooth) surface with the impacts of homogeneous–heterogeneous reactions

“…Other than that, many authors have focused their studies on such kinds of reactions in the regime of flow over surfaces. [21][22][23][24] In view of the above literature, we have made an attempt to investigate the influence of homogeneous and surface reactions in the mixed convective flow of hybrid nanoliquid over an exponentially stretching rough (smooth) surface. The main aspects of this study are given below:…”