On Mon, Oct 13, 2025 at 2:52 AM Miguel Salazar <[email protected]> wrote:
> Hi, > > > > Is there an off-the-shelf solver or preconditioner in PETSc to handle > advection-diffusion equations with large Peclet numbers (Pe > 2000)? The > equations are solved with the FEM and ideally, one could just use the > solver through the PETSc settings without having to set up any mesh > hierarchy or partitioning (no geometric multigrid or domain decomposition). > I read that the Approximate Ideal Restriction method is appropriate for > this kind of problems, but the documentation is scarce. Any pointers are > welcome. > Hi Miguel, We are in the process of integrating PFLARE ( https://urldefense.us/v3/__https://gitlab.com/petsc/petsc/-/merge_requests/8776__;!!G_uCfscf7eWS!ZJ-UU8WRuA_VDt1Dm2hWiknuosHNCBYsXeE5bRhQvYUKO5f9hYqWqO0EPybEBT8sF5mV_wS98QMoE9AUh7nc$ ), which is an AIR package from Steve Dargaville at Imperial. Hopefully in the next few days. You could try out the branch until then and let us know if you have problems. Thanks, Matt > Thanks, > > Miguel > > > > > *MIGUEL ANGEL SALAZAR DE TROYA*Head of Software Engineering > *[email protected]* <[email protected]> > > Corintis SA > EPFL Innovation Park Building C > 1015 Lausanne > > > > [image: Logo-black.png] > Here at Corintis we care for your privacy. That is why we have taken > appropriate measures to ensure that the data you have provided to us is > always secure > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!ZJ-UU8WRuA_VDt1Dm2hWiknuosHNCBYsXeE5bRhQvYUKO5f9hYqWqO0EPybEBT8sF5mV_wS98QMoE-9w9dE-$ <https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!ZJ-UU8WRuA_VDt1Dm2hWiknuosHNCBYsXeE5bRhQvYUKO5f9hYqWqO0EPybEBT8sF5mV_wS98QMoE4QRYI1L$ >
