FIGURE 6.9 (a) Co-located and (b) Staggered grid arrangements.

6.3.2. Algorithms to Treat Pressure-Velocity Coupling

The momentum and continuity equations can be combined to derive an equation for pressure. For example, for constant density and viscosity fluid, the continuity equation can be used to simplify the divergence of the momentum equation (Eq. (6.35)) to yield an equation for pressure:

HP UiUj)

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