A new fully implicit algorithm for solving fluid flow and heat transfer problems - CLEAR (II)

The derivation process and calculation procedure of CLEAR algorithm is formulated in the first part of this paper, and in this part. The SIMPLER and CLEAR algorithm are compared with five two dimensional numerical examples of incompressible fluid flow and heat transfer problems on the subject of the ratio of the iteration number and the corresponding consumed CPU time for obtaining a converged solution under the same converging condition to investigate the robustness, characteristic of the new algorithm. It turns that CLEAR can appreciably enhance the convergence rate which can save the iteration number of 31%-85% and 17%-78% for CPU time compared to SIMPLER algorithm for the five problems tested, and the robustness can be improved by the second relaxation factor.