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大规模工程涡流场有限元计算的困境与展望

DOI: 10.13334/j.0258-8013.pcsee.2015.05.028, PP. 1250-1257

Keywords: 工程涡流场,大规模计算,叠片铁心均匀化,有限元法(FEM),子问题扰动,单元接单元(EBE)并行计算

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Abstract:

精确计算涡流场分布及其在导电材料中产生的损耗,对于电工设备的优化设计与安全运行至关重要。在现阶段,特大型电机、变压器等电工设备中的三维工程涡流场有限元分析存在计算规模大、计算时间长和计算精度不能满足工程精度要求的问题。该文主要从计算方法的层面分析这类问题的研究现状和关键难点,介绍诸如叠片铁心材料特性的传统和改进型均匀化模型、子问题扰动有限元法、区域分解法、单元级别的并行有限元法等针对上述问题的研究对策,分析不同方法的优点和局限性,并提出对今后进一步研究策略的建议,作为快速、高效地实现三维工程涡流场大规模计算任务的参考。

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