Advanced Computational Research in Electromagnetic Wave Interactions

电磁波相互作用的高级计算研究

• 批准号: 8811273
• 负责人: Allen Taflove
• 金额: $ 12.5万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-15 至 1991-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8811273&HistoricalAwards=false
• 关键词: Advanced; Computational; Research; Electromagnetic; Wave

Contemporary high-frequency electromagnetic engineering problems can involve full-vector wave interactions with complex, electrically-large, three-dimensional structures. Numerical simulation of Maxwell's equations for such structures is of great importance since the classical analytical tools for electrodynamics cannot deal with vector near fields that may be almost arbitrarily complex. Two of the primary contemporary thrusts in numerically modeling such problems are: (1) the frequency-domain integro-differential equation approach with solution via the method of moments (MON); and (2) the time-domain partial differential equation approach with solution via the finite-difference time-domain (FD-TD) method. This research project will develop Connection Machine (CM) software for the latest versions of MOM and FD-TD, construct benchmarks relative to Cray-based versions, and develop scaling rules for CM processing of ultra-large near-field data bases. This project will also extend a new spatial decomposition (SD) technique to the latest combined-field surface integral equation versions of MOM. SD is very promising for reducing the dimensionality and ill-conditioning of large MOM problems, and may permit existing computers to process very large EM models.

当代高频电磁工程问题可能涉及全矢量波与复杂的、电大尺寸的三维结构的相互作用。对于这种结构，麦克斯韦方程的数值模拟是非常重要的，因为经典的电动力学分析工具不能处理可能几乎是任意复杂的矢量近场。数值模拟此类问题的两种主要方法是：(1)频域积分-微分方程法(MON)和(2)时间域偏微分方程法(FD-TD)。该研究项目将为MOM和FD-TD的最新版本开发连接机(CM)软件，构建相对于基于Cray的版本的基准，并为超大型近场数据库的CM处理制定定标规则。该项目还将把一种新的空间分解(SD)技术扩展到MOM的最新组合场表面积分方程版。SD在降低大型MOM问题的维度和病态方面非常有希望，并可能允许现有的计算机处理非常大的EM模型。