화학공학소재연구정보센터
Chemical Engineering Journal, Vol.304, 766-773, 2016
A coupled, multiphase heat flux boundary condition for the discrete element method
Similar to single-phase flows, multiphase systems with a constant heat flux at the wall are common in practice. Unlike single-phase flows, however, the numerical implementation of a constant boundary flux is non-trivial due to the coupling between phases - i.e., the partition of the total flux between the phases can vary in space and time. A numerical technique for modeling such a boundary condition is proposed here and verified via simulations of gas-solid flows. While discrete-particle simulations of monodisperse particles are considered here, the technique can be extended to include radiation, polydisperse systems, and/or a continuum representation of the solids phase. (C) 2016 Elsevier B.V. All rights reserved.