| | Gas-solid Eulerian flow model | |
| | Governing equations | |
| | Continuity equations: | | | | Gas-phase: | |
(A) | | Solid-phase: | | (B) | | Momentum equations: | | | | Gas-phase: | | | | | | (C) | | Solid-phase: | | | | | | (D) | | Energy equations: | | | | Gas-phase: | | | | | | (E) | | Solid-phase: | | (F) | | Species conservation: | | (G) | | Reynolds stresses: | | | | | | | | | | (H) |
| | Constitutive equations | |
| Gas-solid momentum exchange
(Gidaspow drag model): | | | | when , | | (I) | | when , | | (J) | | for , | | (K) | | for , | | (L) | | Gas-solid heat exchange: | | (M) | | Kinetic theory of granular flow: | | | | Solids pressure: | | (N) | | Radial distribution: | | (O) | | Granular temperature: | | (P) | | where, | | (Q) | | | | (R) | | | | (S) | | | | (T) |
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