Abstract
In this article, the mathematical model has been established to discuss the double stratified DarcyForehheimer steady flow of radiative Maxwell fluid over a vertical stretching sheet. Investigation of thermal energy and concentration are carried out in the occurrence of Cattaneo Christov theory and activation energy effect. Moreover, the gyrotactic microorganism is used to study bio-convection influenced by buoyancy forces. The governing equations of flow models are transformed into nonlinear ordinary differential equations by using appropriate transformation. The manipulation of subsequent non-linear equations is determined numerically by bvp4c Matlab technique. The impact of different emerging parameters is discussed through graphs. It is viewed that for greater values of Forehheimer number (Fr) and porosity parameter (lambda) the momentum boundary layer becomes thicker, hence the velocity profile decline. Furthermore, for the larger values of radiation parameter Rd the surface flux becomes larger, which increases the temperature. The microorganism transfer rate is examined by tabulating data. It is noted from the tabulated date that for different values of b and Fr the microorganism number shows decreasing behavior. (c) 2021 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.