Heat/mass transfer of a rotated dual wavy shape in a nanofluid-filled cavity partially saturated by porous media

This study is working on numerical simulations of thermosolutal convection of a circular rotation of a dual wavy shape in a cavity filled with a nanofluid and with two porous layers on the vertical sides. The rotated objects are applied in engineering designs including the shaft of a turbine, the trembling of a thermal fin, and the collector of solar energy. The ISPH method is proposed to solve the dimensionless form of the regulating equations. The ISPH method showed good efficiency in simulating the fluid-structure interaction of a circular rotation of a rigid dual-wavy shape within a nanofluid flow. The numerical simulations exhibited the implication of a rotational motion of an inner wavy shape in improving the transmission of heat and mass as well as the nanofluid movements. The involved physical parameters are including a dimensionless time (0.025 <=tau <= 0.675), thermal radiation parameter (0 <= Rd <= 10), nanoparticle parameter (0 <=phi <= 0.1), Rayleigh number (10(3)<= Ra <= 10(6)), Hartmann number (0 <= Ha <= 80), Darcy parameter (10(-2)<= Da <= 10(-5)), and length of dual wavy curves (0.1 <= L-Wavy <= 0.7). The nanofluid speed shrinks by an increase in Hartmann number, length of a dual wavy shape, and nanoparticle parameter. Besides, the nanofluid speed reduces in the vertical porous layers at a lower Darcy parameter. The thermosolutal convection is dramatically enhanced according to an augmentation of a length of a dual wavy shape, and Rayleigh number. The value of (Nu) over bar enhances by 82.22%, 194.12%, 15.65%, and 108.76% according to an increase in Rd from 0 to 10, LWavy from 0.1-0.7, phi from 0 to 0.1, and Ra from 10(3) to 10(6), respectively.