Transient rotating nanofluid flow over a Riga plate with gyrotactic micro-organisms, binary chemical reaction and non-Fourier heat flux

Bioconvection for rotational flow is conceived to provide stability to improved thermal transportation for nanofluid flow over Riga plate design. Nanoparticles are considered due to their unusual characteristics like extraordinary thermal conductivity, which are significant in heat exchangers, advanced nanotechnology, electronics, and material sciences. Cattaneo- Christov theory and activation energy are incorporated. The unsteady three dimensional partially differentiate formulation is simplified in the form of two independent coordinates (zeta, eta). For steady-state solution (zeta = 1), Galerkin discretization in used to employ finite element simulation in MATLAB environment. The unsteady parameter rotating parameter, thermophoresis, and Brownian motion parameter escalated the nanofluid temperature field. Modified electromagnetic parameter M-H accelerated the primary flow velocity and activation energy augmented the volume fraction of nanoparticles in the boundary layer region. The larger modified Hartmaan number M-H reduces the coefficient of skin friction in primary direction but the magnitude of coefficient of skin friction in secondary direction is augmented. The local Nusselt number Re-x(1/2) Nu(x) is directly proportional to M-H but it is inversely related to beta. The higher values of Brownian motion and thermophoresis boosted the temperature. An excellent accord among the present and previously existing solutions is establishes the validity of the current findings.

Automated summary

Bioconvection for rotational flow is studied to enhance thermal transportation and optimize characteristics like thermal conductivity of nanofluid over Riga plate. Theoretical models incorporating Cattaneo-Christov theory and activation energy are used to simplify the three-dimensional formulation. Galerkin discretization in MATLAB environment is applied for finite element simulation of steady-state and unsteady temperature fields.