PRISMS-PF:A general framework for phase-field modeling with a matrix-free finite element method  

作　　者：Stephen DeWitt Shiva Rudraraju David Montiel W.Beck Andrews Katsuyo Thornton 

机构地区：[1]University of Michigan,Department of Materials Science and Engineering,2300 Hayward St.,Ann Arbor,MI 48109,USA [2]University of Michigan,Department of Mechanical Engineering,2350 Hayward St.,Ann Arbor,MI 48109,USA [3]University of Wisconsin,Madison,WI 53706,USA

出　　处：《npj Computational Materials》2020年第1期1421-1432,共12页计算材料学（英文）

基　　金：This work was supported by the U.S.Department of Energy,Office of Basic Energy Sciences,Division of Materials Sciences and Engineering under Award#DESC0008637 as part of the Center for PRedictive Integrated Structural Materials Science(PRISMS Center)at University of Michigan;This research used resources of the National Energy Research Scientific Computing Center(NERSC),a U.S.Department of Energy Office of Science User Facility operated under Contract No.DE-AC02-05CH11231;This research was also supported through computational resources and services provided by Advanced Research Computing at the University of Michigan,Ann Arbor.

摘　　要：A new phase-field modeling framework with an emphasis on performance,flexibility,and ease of use is presented.Foremost among the strategies employed to fulfill these objectives are the use of a matrix-free finite element method and a modular,application-centric code structure.This approach is implemented in the new open-source PRISMS-PF framework.Its performance is enabled by the combination of a matrix-free variant of the finite element method with adaptive mesh refinement,explicit time integration,and multilevel parallelism.Benchmark testing with a particle growth problem shows PRISMS-PF with adaptive mesh refinement and higher-order elements to be up to 12 times faster than a finite difference code employing a second-order-accurate spatial discretization and first-order-accurate explicit time integration.

关 键 词：structure FINITE ELEMENT 

分 类 号：O35[理学—流体力学]