Jiaqi, the algorithm in step-35 is the one that is proposed in "L. Timmermans, P. Minev, and F. Van De Vosse, “An approximate projec- tion scheme for incompressible flow using spectral elements”, International journal for numerical methods in fluids, vol. 22, no. 7, pp. 673–688, 1996."
The velocity that is solved for is the auxiliary one. You can recover the "true" weakly divergence-free velocity by the correction you mentioned. Notice that the divergence-free velocity is eliminated from the equation for the auxiliary velocity. Best, Daniel -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
