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An electrical-thermal co-simulation is presented for analysis of integrated circuits. The co-simulation addresses a wide range of situations where strong interactions between electrical designs and thermal issues have to be properly accounted. The capability of the co-simulation is extended to deal with large-scale problems by incorporating a domain decomposition scheme, parallel computing, and an...
In this paper, we investigate the three most robust finite element-based domain decomposition methods for modeling of large phased arrays. They are (1) the conformal dual-primal finite element tearing and interconnecting method with one or two Lagrange multipliers, (2) the nonconformal dual-primal finite element tearing and interconnecting method with two Lagrange multipliers, and (3) the nonconformal...
The dual-primal finite element tearing and interconnecting (FETI-DP) method is combined with the Newton-Raphson method to expand the capability and improve the efficiency of three-dimensional finite element analysis (FEA) of nonlinear electromechanical and electric machine problems. Despite its modeling capability and high degree of accuracy, FEA has high computational complexity, especially for nonlinear...
Full-wave analysis has become critical to the signal integrity of 3D high-speed circuits due to increased electromagnetic (EM) effects. The finite-element time-domain (FETD) method has become a strong candidate among different EM algorithms and domain decomposition methods have been proposed to avoid the need to solve a global matrix equation in FETD. In this work, a novel unconditionally stable FETD-based...
As the operating frequency and integration level of integrated circuits (IC) increase, full-wave analysis algorithms are needed to accurately simulate the arising electromagnetic phenomena. The finite-element time-domain (FETD) method has become an attractive candidate for this simulation due to its advantages in modeling complex geometries and materials, conducting transient analyses, and performing...
Three finite element-based explicit numerical algorithms, named the dual-field domain decomposition at the element level (DFDD-ELD), the discontinuous Galerkin time-domain method with upwind fluxes (DGTD-Upwind), and the discontinuous Galerkin time-domain method with central fluxes (DGTD-Central), are implemented and compared in terms of accuracy, efficiency, and higher-order convergence. All three...
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