Module 5: Solution of Navier-Stokes Equations for Incompressible Flows Using SIMPLE and MAC Algorithms
  Lecture 29:
 

 

Patankar (1980) introduced a revised algorithm, SIMPLER to improve the situation. The SIMPLER algorithm has the following steps.

  1. A velocity field is computed form equations (28.3) and (28.4).
  2. Equation (29.5) then become a Poisson equation for rather than with replacing the terms in
  3. The (obtained from 2 steps) replace in equations (28.3) and (28.4), which are solved for (as it was done in SIMPLE).
  4. Equation (29.5) is solved for and it is used to provide but no further adjustment is made to .

Van Doormal and Raithby (1984) proposed SIMPLEC which is a modified version of SIMPLE algorithm and gives faster convergence.

 

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