Analysis of mixed convection in a sloshing porous cavity filled with a nanofluid using ISPH method

Abstract

This study focuses on the analysis of the mixed convection in a sloshing cavity filled with a nanofluid and a non-Darcy porous medium using incompressible smoothed particle hydrodynamics (ISPH) method. In ISPH method, the dummy wall boundary particles are applied to prevent the particle penetrations during the cavity sloshing. Here, the cavity is sloshing under a resonance sway excitation at different values of a amplitude of a wave. The cavity has cool temperature at the top wall, hot temperature at the bottom wall and adiabatic temperature at side walls. The current investigations check the effects of the Richardson parameter $$Ri\,(0.0001 - 1)$$, amplitude of a wave $$A\;(0.1 - 0.8)$$, Darcy parameter $$Da\;(10^{ - 6} - 10^{ - 1} )$$ and a solid volume fraction $$\phi \,(0 - 0.05)$$ on the fluid flow and heat transfer inside a sloshing cavity. Here, the baffle is inserted inside the middle of the square cavity carrying two different cases of the thermal boundary conditions. The results showed that the higher resistance force for fluid flow and an increase in heat transfer were obtained when Darcy parameter decreases. The inner baffle has a strong effect on the temperature distributions along the cavity. The present ISPH method is a robust in a long-time simulation of mixed convection for sloshing problems.