Abstract
A two-way coupling particle flux model is proposed for studying the multi-component solid–fluid suspension. The suspension mixture is treated as a non-linear single-phase fluid and the migration of the solid particles is modeled by a particle flux equation. The proposed particle flux model takes the effects of the particle migration on the transport of the suspension’s momentum and internal energy into account. Two benchmark problems are calculated to study the performance of the proposed particle flux model, i.e., flow in a sudden expansion straight channel and flow between two rotating cylinders. It is found that the particle flux model converges without numerical stability issue with the commonly used PISO-SIMPLE transient solver, and the effect of the particle migration is evident on both velocity profile and temperature distribution.
Highlights
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We introduce the constitutive equations for shear stress, heat flux and particles transport flux implemented in the proposed two-way coupling particle flux model
The particle flux model by Phillips et al [14] was further developed so that a two-way coupling particle flux equations—namely, the particle flux model could be formulated by considering the effect of the particle migration on the transport of the momentum and internal energy of the fluid phase
Summary
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