Thermosolutal convection of nano-encapsulated phase change materials within a porous circular cylinder containing crescent with periodic side-wall temperature and concentration: ISPH simulation

This work inspects the magnetic influences on the thermosolutal convection of nano-encapsulated phase change materials (NEPCMs) within a circular cylinder including crescent with periodic sidewall temperature and concentration. The incompressible smoothed particle hydrodynamics (ISPH) method based on a Grunwald- Letnikove time derivative is adopted to handle the current physical problem. The circular cylinder is suspended by NEPCM and saturated by a porous medium. Rotation of an inner crescent with a variable frequency has been conducted. The influences of a fractional time derivative alpha from 0.95 to 1, Darcy parameter Da from 10(-2) to 10(-5), Rayleigh number Ra from 10(3) to 10(6), Hartmann number Ha from 0 to 50, a fusion temperature from 0.05 to 0.9, rotation parameter omega from 1 to 5, amplitude parameter A from 0.5 to 2, and frequency parameter f from 5 to 100 on the heat capacity, isotherms, velocity field, isoconcentration, and mean Nusselt number (Nu) over bar and mean Sherwood number (Sh) over bar are investigated. It is found that an increase in the Hartmann number drops the velocity's maximum by 21.43%. Increasing a fusion temperature theta(f) shifts the phase change zone towards the inserted heated crescent. The angular rotation parameter omega for an inner crescent is changing the heat/mass transport and nanofluid movements within a circular cylinder. The phase change zone is affected by the variations of an amplitude parameter A at higher values of the frequency f >= 50. The values of (Nu) over bar and (Sh) over bar are increasing as an amplitude parameter A boosts.

Automated summary

The study found that an increase in the Hartmann number decreases the maximum velocity by 21.43%. Increasing the fusion temperature shifts the phase change zone towards the inserted heated crescent. The rotational parameter for the inner crescent affects the heat/mass transport and nanofluid movements within the circular cylinder.