The impact of magnetic source on natural convection flow of Cu-water nanofluid involving oxytactic bacteria

Yükseköğretim Kurumları Destekli Proje, BAP Araştırma Projesi, 2025 - 2026

The two-dimensional, time independent Cu-water nanofluid flow in the presence of oxytactic bacteria is to be numerically

investigated in a unit square cavity subjected to the point source magnetic field. The cavity is a differentially heated cavity in

which the left wall is the hot wall, the right wall is the cold wall, the bottom wall is adiabatic and the top wall is an open or

insulated wall. The governing dimensionless equations consisting of continuity, momentum including magnetic source terms,

energy, oxygen concentration and the density of microorganisms are solved by implementing the polyharmonic spline radial

basis function (RBF) method. The numerical results are depicted in terms of contour plots of stream function, temperature,

concentration and the density of microorganisms for the variation of physical parameters, which are Rayleigh number (Ra),

bioconvection Rayleigh number (Rab), Peclet number (Pe), Lewis number (Le), Hartmann number (Ha) and magnetic number

(Mn), and the position of a magnetic point source placed close to a wall of the cavity. Also, the impacts of these parameters are

concerned in view of the enhancement of convective heat and mass transfer interpreted in terms of average Nusselt and

Sherwood numbers, and the average density of bacteria. In the second part of the Project, the machine learning modeling of the

chosen heat transfer and fluid flow indicators in this bioconvection nanofluid flow is to be utilized with the data gathered from the

numerical results.