Fast Algorithms of Parallel Finite Element Method Based on Domain Decomposition[J]. Acta Electronica Sinica, 2019, 47(3): 741-747. DOI: 10.3969/j.issn.0372-2112.2019.03.032.
DDM (Domain Decomposition Method) is one of the most quickly developed methods in recent years.We investigate the fast solving techniques of adaptive refinement and discrete frequency sweep based on DDM.Besides
an in-house developed infrastructure is used to implement the proposed algorithms
which is able to scale to tens of thousands of CPU cores.We demonstrate the architecture and main features of the program.Then
the DDM
p-adaptive strategy and fast frequency sweep techniques are discussed as well to show how to solve the finite element linear systems quickly.Several numerical examples are presented to demonstrate its accuracy
parallel efficiency and capability in electromagnetic applications.