Good luck at the defence! Hope it goes well! Peter
On Sunday, 18 April 2021 at 00:44:44 UTC+2 mtwich...@gmail.com wrote: > Dear all, > I have developed a parallel matrix-free monolithic FSI solver in the ALE > frame of reference. Exemplary results [1 <https://youtu.be/7TaC1dTfAQY>, 2 > <https://youtu.be/TRnlt_eC32Q>], more details in my PhD thesis [3] > <http://www.ippt.pan.pl/repository/doktoraty/open/2021wichrowski_m_doktorat.pdf> > . > > *Highlights*: > > -> The proposed monolithic predictor-corrector time integration scheme > requires solving the generalized Stokes problem with discontinuous variable > coefficients. This has to be done one or two times per time step, depending > on the variant of the scheme. > > -> I have introduced a new multilevel preconditioner, for a 3D case the > time required to solve a system consisting of 421 million unknowns using 96 > cores is 178 seconds. > > -> As demonstrated by the movie[1], I am able to solve 3D problems at > moderate Reynolds numbers (time step size of 0.01 did not result in any > stability issues with Re=2k). > > ->The preconditioner from the thesis can still be greatly improved. I have > a proof of concept demonstrating the basic properties of a new idea of > smoother. The results look very promising and I'm curious how it would > work. Moreover, the algorithm is suitable for GPU that could result in > further speedup. > > [1] 3D "Turek benchmark" at Re = 2000 (30M DoF) > https://youtu.be/7TaC1dTfAQY > [2] Water hammer in elastic tube (12M DoF) > https://youtu.be/TRnlt_eC32Q > > Those results were obtained as a part of my PhD thesis. I have finally > managed to submit it in January, the defence will be held in 3 weeks > (expect reviews next week). > I am looking for a post-doc (preferably deal.II-related). I'll be happy to > get an opportunity to continue my work. > > Best, > Michał Wichrowski > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/c9fd51a4-cc3d-4fac-9da8-4f9a3fbaea66n%40googlegroups.com.
