A coupled, multiphase heat flux boundary condition for the discrete element method

作者：Lattanzi Aaron M; Hrenya Christine M^*

来源：Chemical Engineering Journal, 2016, 304: 766-773.

DOI：10.1016/j.cej.2016.07.004

• DEM
• Heat transfer
• Boundary conditions

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.

• 出版日期2016-11-15