Mixed convection in a nanofluid-filled sloshing porous cavity including inner heated rose

In this paper, study of the heat transfer by mixed convection in sloshing enclosures heated from inside by an inner rose and filled with a porous medium using nanofluids is carried out. The Hazen-Dupain-Darcy model is applied to represent the porous medium, while the nanofluids are investigated using the one-phase model. The governing equations are converted to the dimensionless form and then solved numerically using the finite volume method. The controlling parameters in this simulation are numbers of the rose petals k, lengths of the rose petals a, the Richardson number Ri, the sloshing cavity amplitude A, the resonance frequency omega, the nanoparticle volume fraction phi and the Darcy number Da. It is found that rate of the heat transfer in case of the even number of the rose petals is greater than that of the odd number case. Also, the increase in either the sloshing cavity amplitude A or lengths of the rose petals a enhances the local Nusselt number, while as the resonance frequency omega increases, the average Nusselt number around the rose is reduced.