Abstract
The magnetic impacts upon the transport of heat and mass of an electrically conducting nanofluid within an annulus among an inner rhombus with convex and outer cavity with periodic temperature/concentration profiles on its left wall are assessed by the ISPH method. The right wall has T-c and C-c, flat walls are adiabatic, and the temperature and concentration of the left wall are altered sinusoidally with time. The features of the heat and mass transfer and fluid flow through an annulus are assessed across a wide scale of Hartmann number Ha, Soret number Sr, oscillation amplitude A, Dufour number Du, nanoparticles parameter phi, oscillation frequency f, Rayleigh number Ra, and radius of a superellipse a at Lewis number Le = 20, magnetic field's angle gamma = 45 degrees, Prandtl number Pr = 6.2, a superellipse coefficient n = 3/2, and buoyancy parameter N = 1. The results reveal that the velocity's maximum reduces by 70.93% as Ha boosts from 0 to 50, and by 66.24% as coefficient a boosts from 0.1 to 0.4. Whilst the velocity's maximum augments by 83.04% as Sr increases from 0.6 to 2 plus a decrease in Du from 1 to 0.03. The oscillation amplitude A, and frequency f are significantly affecting the nanofluid speed, and heat and mass transfer inside an annulus. Increasing the parameters A and f is augmenting the values of mean Nusselt number (Nu) over bar and mean Sherwood number (Sh) over bar. Increasing the radius of a superellipse a enhances the values of (Nu) over bar and (Sh) over bar.