1,721,262 research outputs found
Shape identification of conductive anomalies by a new ECT data inversion algorithm
No full textBournemouth, U
A novel integral formulation for the solution of Maxwell equations
No full textThis paper presents a novel integral formulation for the solution of the full Maxwell equations in the frequency domain. The solenoidality of the current density inside a homogeneous conductor is exploited to introduce a two-component electric vector potential, which is numerically expanded in terms of edge elements
A novel integral formulation for the solution of Maxwell equations
No full textThis paper presents a novel integral formulation for the solution of the full Maxwell equations in the frequency domain. The solenoidality of the current density inside a homogeneous conductor is exploited to introduce a two-component electric vector potential, which is numerically expanded in terms of edge elements
Shape identification of conductive anomalies by a new ECT data inversion algorithm
No full textBournemouth, U
An analytical demonstration of coupling schemes between magnetohydrodynamic codes and eddy current codes
No full textIn order to model a magnetohydrodynamic (MHD) instability that strongly couples to external conducting structures (walls and/or coils) in a fusion device, it is often necessary to combine a MHD code solving for the plasma response, with an eddy current code computing the fields and currents of conductors. We present a rigorous proof of the coupling schemes between these two types of codes. One of the coupling schemes has been introduced and implemented in the CARMA code {[}R. Albanese, Y. Q. Liu, A. Portone, G. Rubinacci, and F. Villone, IEEE Trans. Magn. 44, 1654 (2008); A. Portone, F. Villone, Y. Q. Liu, R. Albanese, and G. Rubinacci, Plasma Phys. Controlled Fusion 50, 085004 (2008)] that couples the MHD code MARS-F {[}Y. Q. Liu, A. Bondeson, C. M. Fransson, B. Lennartson, and C. Breitholtz, Phys. Plasmas 7, 3681 (2000)] and the eddy current code CARIDDI {[}R. Albanese and G. Rubinacci, Adv. Imaging Electron Phys. 102, 1 (1998)]. While the coupling schemes are described for a general toroidal geometry, we give the analytical proof for a cylindrical plasma
Fast Full-Wave Modeling of Passive Structures with Graphic Processors
No full textA parallel computation approach based on the properties of the Graphics Processor Units (GPU) is here presented to speed-up the broadband modeling of passive 3D structures. The full-wave electromagnetic model is based on a surface integral formulation, numerically implemented by using a null-pinv decomposition of the unknowns. The numerical model has been proven to be accurate and well-posed for a frequency range from DC to hundreds of GHz. A bottleneck of the model is the assembly of fully populated matrices and the final matrix inversion. This paper presents A GPU parallelization of the matrix assembly phase, and analyzes two case-studies which refer to full-wave analysis of interconnects. The achieved speedup with respect to a conventional serial approach is around 50x
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