Velocity-pressure coupling

From CFD-Wiki

If we consider the discretised form of the Navier-Stokes system, the form of the equations shows linear dependence of velocity on pressure and vice-versa. This inter-equation coupling is called velocity pressure coupling. A special treatment is required in order to velocity-pressure coupling. The methods such as:

1. SIMPLE
2. SIMPLER
3. SIMPLEC
4. PISO

provide an useful means of doing this for segregated solvers. However it is possible to solve the system of Navier-Stokes equations in coupled manner, taking care of inter equation coupling in a single matrix.

SIMPLE

See SIMPLE algorithm

SIMPLER

See SIMPLER algorithm

SIMPLEC

See SIMPLEC algorithm

PISO

See PISO algorithm

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1. Numerical Methods