Smooth Aggregation for Difficult Stretched Mesh and Coefficient Variation Problems

Autor: Hu, Jonathan J., Siefert, Chris, Tuminaro, Raymond S.

Four adaptations of the smoothed aggregation algebraic multigrid (SA-AMG) method are proposed with an eye towards improving the convergence and robustness of the solver in situations when the discretization matrix contains many weak connections. Thes

Externí odkaz: http://arxiv.org/abs/2103.10476

A monolithic algebraic multigrid framework for multiphysics applications with examples from resistive MHD. ETNA - Electronic Transactions on Numerical Analysis

Autor: Cyr, Eric C., Shadid, John N., Hu, Jonathan J., Ohm, Peter, Tuminaro, Raymond S., Wiesner, Tobias A.

We consider monolithic algebraic multigrid (AMG) algorithms for the solution of block linear systems arising from multiphysics simulations. While the multigrid idea is applied directly to the entire linear system, AMG operators are constructed by lev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______386::306359c013f442ce4bd1d41548ad1d46
http://epub.oeaw.ac.at/?arp=buecher/Organisationseinheiten/_id105092_/ETNA/etna_Vol_55/pp365-390.pdf

MueLu User's Guide 2.0

Autor: Berger-Vergiat, Luc, Glusa, Christian A., Hu, Jonathan J., Mayr, Matthias, Prokopenko, Andrey, Siefert, Christopher M., Tuminaro, Raymond S., Wiesner, Tobias

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4eed4eeda3884beb56c2aeb1285af4a

TOWARD AN h-INDEPENDENT ALGEBRAIC MULTIGRID METHOD FOR MAXWELL'S EQUATIONS.

Autor: Hu, Jonathan J.¹ jhu@sandia.gov, Tuminaro, Raymond S.¹ rstumin@sandia.gov, Bochev, Pavel B.² pbboche@sandia.gov, Garasi, Christopher J.³ cjgaras@sandia.gov, Robinson, Allen C.⁴ acrobin@sandia.gov

Publikováno v: SIAM Journal on Scientific Computing. 2006, Vol. 27 Issue 5, p1669-1688. 20p. 1 Color Photograph, 6 Diagrams, 12 Charts, 2 Graphs.

Algebric Multigrid using Energy-Minimization in Parallel Setting

Autor: Prokopenko, Andrey, Gaidamour, Jérémie, Hu, Jonathan J., Tuminaro, Raymond S.

Publikováno v: International Conference on Preconditioning Techniques for Scientific and Industrial Applications
International Conference on Preconditioning Techniques for Scientific and Industrial Applications, Jun 2013, Oxford, United Kingdom

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::4793947d1cd4fdcac355e60a5717d121
https://hal.univ-lorraine.fr/hal-03270393