Research Article
CFD Study of Industrial FCC Risers: The Effect of Outlet Configurations on Hydrodynamics and Reactions
Table 1
Summary of governing and constitutive equations for Eulerian approach.
| 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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