Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Subgridding"”.
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FDTD subgridding with higher order derivative approximations
… grown to an unmanageable size. However, FDTD subgridding methods solve this problem without the need for excessive large memory allocation. Subgridding allows for the problem space to be divided into fine grids around articles of interest and then coarse grids elsewhere. Further accuracy …
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Part I: Improved handling of geometry details in finite difference time domain method; Part II: Method of circuit extraction using finite difference frequency domain matrix formulation with application to power bus modeling
"In the first half of this work, a subgridding algorithm with separate spatial and temporal subgridding interfaces in proposed, which makes it possible to analyze and test the spatial and temporal algorithms separately and may also provide additional flexibility. The spatial subgridding method is …
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Methodologies for Broadband Electromagnetic Modeling of on-Chip Semiconductor Substrate Noise
… scheme. Furthermore, a previously proposed FDTD subgridding scheme, based on a finite element method (FEM) formalism, has been reformulated and adapted to work within the FIT framework. One important element of the presented subgridding scheme is that it maintains the transpose property between …
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Matrix-free time-domain methods for general electromagnetic analysis
… structures, we develop an accurate FDTD subgridding algorithm suitable for arbitrary subgridding settings with arbitrary contrast ratios between the normal gird and the subgrid. Although the resulting system matrix is unsymmetric, we develop a time marching method to overcome the …
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Development and application of hybrid finite methods for solution of time dependent maxwell's equations
… FETD method. Based on this method, an FDTD subgridding method with provable numerical stability is proposed. Numerical examples indicating the potential of the subgridding method with different refinement ratios are demonstrated. Thirdly, the extension of the hybrid FETD-FDTD method using …
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Modelling and analysis of complex electromagnetic problems using FDTD subgridding in hybrid computational methods. Development of hybridised Method of Moments, Finite-Difference Time-Domain method and subgridded Finite-Difference Time-Domain method for precise computation of electromagnetic interaction with arbitrarily complex geometries
… for the whole structure, combined with a subgridding method at points of interest, particularly the pipeline. The induced fields above the pipeline are investigated and analysed. FDTD is based on the solution of Maxwell¿s equations in differential form. It is very useful for modelling …
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Parallel FDTD Electromagnetic Simulation of Dispersive Plasmonic Nanostructures and Opal Photonic Crystals in the Optical Frequency Range
… A parallel FDTD code with a mesh refinement (subgridding) for the more detailed regions has been developed in order to speed up the simulation time. The parallel approach is also needed for the large amount of required memory due to the dimension of the analysis domain. Plasmonic …