12 Jul 2017
13:30
A104
S3: Engineering Modeling – Computational Electromagnetics
| 1. A Note on the Use of Domain Discretization Methods in Modeling of some Phenomena in Engineering Physics | ||
| Dragan Poljak and Ante Rubic (University of Split, Croatia); Enora Maze (Blaise Pascal University, France) | ||
| The paper reviews some application of well-established domain,discretization methods (finite difference method-FDM), finite element,method-FEM) in modeling of magnetohydrodynamics (MHD) phenomena for,fusion related research and quantum structures for aplication in,nanodevices. Thus, Grand-Shafranov Equation (GSE) for plasma equilibrium,has been solved for some simple excitation forms and the obtained,numerical results for the rectangular plasma, have been presented.,Furthermore, stationary Schrӧdinger equation is numerically solved via,FDM and FEM, respectively. This paper should be referred as an opener to,the numerical modeling in plasma physics and nanotechnology. | ||
| 2. Definition and Computation of Carson Formulas | ||
| Ivan Krolo, Tonći Modrić and Slavko Vujević (University of Split, Croatia) | ||
| In this paper, a new numerical algorithm for high-accurate computation,of exact Carson formulas is developed. Carson formulas are used for,computing of per-unit-length (pul) self and mutual impedances of,infinitely long parallel conductors. The proposed algorithm is based on,piecewise linear approximation of kernel function and analytical,integrations of piecewise-linearized kernel function multiplied by the,rest of two integrands. Using proposed numerical algorithm,,high-accurate results with desired n-digit accuracy can be easily,obtained. Results computed by two approximation methods are compared,with high-accurate results computed by proposed numerical algorithm for,power frequency. | ||
| 3. Statistical transient impedance of horizontal grounding systems: application to sensitivity analysis with ANOVA approaches | ||
| Sebastien Lalléchère, Pierre Bonnet, Françoise Paladian and Khalil El Khamlichi Drissi (Université Clermont Auvergne, France); Silvestar Sesnic, Anna Susnjara and Dragan Poljak (University of Split, Croatia) | ||
| This work is devoted to the impact of random environmental constraints,regarding the transient impedance of horizontal grounding wire.,Deterministic modeling relies on solving the Pocklington equation in the,frequency domain (antenna theory). First, the method is based upon the,scattered voltage analytically computed at the input terminal of the,grounding electrode; transient impedance is then extracted from Inverse,Fast Fourier Transform. Finally, a methodology is proposed to precisely,assess the respective influence of different parameters jointly by means,of stochastic collocation method and sensitivity analysis. |