Abstract
In this study, we analyzed particle-laden flow in a differentially heated cubic cavity by using direct numerical simulations and the Lagrangian particle tracking method. The main purpose of this study was to investigate the physical mechanism responsible for the modification of natural convection flow by sedimenting solid particles. Rayleigh number of Ra=106 was considered, and two important parameters, namely, the particle diameter dp and particle volume fraction ΦV, were varied in the range of dp=25,35,50,75μm and ΦV=2×10−5,5×10−5,10−4. Extensive numerical investigations were performed by considering the two-way interaction for the following two coupling cases: (i) momentum coupling only; (ii) momentum and thermal coupling between fluid and particles. Behavior of particles, flow modification, and heat transfer characteristics were investigated in detail with the relevant statistics.
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