Space-Time Field Projection: Finite-Element Analysis Coupled Between Different Meshes and Different Time-Step Settings

作者：Wang Zifu^*; Henneron Thomas; Hofmann Heath

来源：IEEE Transactions on Magnetics, 2016, 52(3): 7002004.

DOI：10.1109/TMAG.2015.2490600

• Biorthogonal functions
• field projection
• finite-element methods
• Galerkin method
• modeling

In this paper, field projection methods are used to couple finite-element analysis carried out on different meshes and different temporal discretization bases. The prior-art mesh-to-mesh spatial field projection is extended to the time domain in this paper. We first define a space-time error norm between a given field distribution and the target field to be determined, and then minimize it using the Galerkin method. Biorthogonal test functions are also introduced into the projection process to replace inner product matrices with diagonal matrices and reduce the computation cost in terms of memory as well as the calculation time required.

• 出版日期2016-3