Parallel adaptive infrastructure for magnetically confined fusion plasma simulations
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Authors
Zhang, Fan
Issue Date
2015-12
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Mechanical engineering
Alternative Title
Abstract
Mesh-based needs in M3D-C1 include a procedure to form the global discrete equation, methods to estimate the simulation error, and a loop of adaptive mesh control. A mesh-adjacency based matrix assembly procedure with more efficient memory usage than the procedure using the PETSc matrix library directly is developed. The numerical conditioning of the global discrete system is improved through element-level operations. An explicit a posterior error estimator that calculates the mesh-dependent norm of the residual in the strong form is derived for the reduced MHD model under the large-aspect-ratio approximation. Software tools such as PUMI for mesh management and geometric model interfacing, APF for field management, MeshAdapt for mesh modification, PETSc for global equation solving, and Simmetrix for initial mesh generation are used to form the parallel adaptive loop in M3D-C1 .
Description
December 2015
School of Engineering
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY