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Numerical Methods in Electromagnetism.
Title:
Numerical Methods in Electromagnetism.
Author:
Salon, Sheppard.
ISBN:
9780080512891
Personal Author:
Edition:
1st ed.
Physical Description:
1 online resource (783 pages)
Series:
Electromagnetism
Contents:
Front Cover -- Numerical Methods in Electromagnetism -- Copyright Page -- Contents -- Foreword -- Preface -- CHAPTER 1. BASIC PRINCIPLES OF ELECTROMAGNETIC FIELDS -- 1.1 Introduction -- 1.2 Static Electric Fields -- 1.3 The Electric Potential -- 1.4 Electric Fields and Materials -- 1.5 Interface Conditions on the Electric Field -- 1.6 Laplace's and Poisson's Equations -- 1.7 Static Magnetic Fields -- 1.8 Energy in the Magnetic Field -- 1.9 Quasi-statics: Eddy Currents and Diffusion -- 1.10 The Wave Equation -- 1.11 Discussion of Choice of Variables -- 1.12 Classification of Differential Equations -- CHAPTER 2. OVERVIEW OF COMPUTATIONAL METHODS IN ELECTROMAGNETICS -- 2.1 Introduction and Historical Background -- 2.2 Graphical Methods -- 2.3 Conformal Mapping -- 2.4 Experimental Methods -- 2.5 ElectroConducting Analog -- 2.6 Resistive Analog -- 2.7 Closed Form Analytical Methods -- 2.8 Discrete Analytical Methods -- 2.9 Transformation Methods for Nonlinear Problems -- 2.10 Nonlinear Magnetic Circuit Analysis -- 2.11 Finite Difference Method -- 2.12 Integral Equation Method -- 2.13 The Finite Element Method -- CHAPTER 3. THE FINITE DIFFERENCE METHOD -- 3.1 Introduction -- 3.2 Difference Equations -- 3.3 Laplace's and Poisson's Equations -- 3.4 Interfaces Between Materials -- 3.5 Neumann Boundary Conditions -- 3.6 Treatment of Irregular Boundaries -- 3.7 Equivalent Circuit Representation -- 3.8 Formulas For High-Order Schemes -- 3.9 Finite Differences With Symbolic Operators -- 3.10 Diffusion Equation -- 3.11 Conclusions -- CHAPTER 4. VARIATIONAL AND GALERKIN METHODS -- 4.1 Introduction -- 4.2 The Variational Method -- 4.3 The Functional and its Extremum -- 4.4 Functional in more than one space variable and its extremum -- 4.5 Derivation of the Energy-Related Functional -- 4.6 Ritz's method -- 4.7 The Wave Equation.

4.8 Variational Method for Integral Equations -- 4.9 Introduction to The Galerkin Method -- 4.10 Example of the Galerkin Method -- CHAPTER 5. SHAPE FUNCTIONS -- 5.1 Introduction -- 5.2 Polynomial Interpolation -- 5.3 Deriving Shape Functions -- 5.4 Lagrangian Interpolation -- 5.5 Two-Dimensional Elements -- 5.6 High-Order Triangular Interpolation Functions -- 5.7 Rectangular Elements -- 5.8 Derivation of Shape Functions for Serendipity Elements -- 5.9 Three-Dimensional Finite Elements -- 5.10 Orthogonal Basis Functions -- CHAPTER 6. THE FINITE ELEMENT METHOD -- 6.1 Introduction -- 6.2 Functional minimization and global assembly -- 6.3 Solution to the nonlinear magnetostatic problem with first-order triangular finite elements -- 6.4 Application of the Newton-Raphson Method to a First-Order Element -- 6.5 Discretization of Time by the Finite Element Method -- 6.6 Axisymmetric Formulation for the Eddy Current Problem Using Vector Potential -- 6.7 Finite Difference and First-Order Finite Elements -- 6.8 Galerkin Finite Elements -- 6.9 Three-Element Magnetostatic Problem -- 6.10 Permanent Magnets -- 6.11 Numerical Example of Matrix Formation for Isoparametric Elements -- 6.12 Edge Elements -- CHAPTER 7. INTEGRAL EQUATIONS -- 7.1 Introduction -- 7.2 Basic Integral Equations -- 7.3 Method of Moments -- 7.4 The Charge Simulation Method -- 7.5 Boundary Element Equations for Poisson's Equation in Two Dimensions -- 7.6 Example of BEM Solution of a Two-Dimensional Potential Problem -- 7.7 Axisymmetric Integral Equations for Magnetic Vector Potential -- 7.8 Two-Dimensional Eddy Currents With T-Ω -- 7.9 BEM Formulation of The Scalar Poisson Equation in Three Dimensions -- 7.10 Green's functions for some typical electromagnetics applications -- CHAPTER 8. OPEN BOUNDARY PROBLEMS -- 8.1 Introduction -- 8.2 Hybrid Harmonic Finite Element Method.

8.3 Infinite Elements -- 8.4 Ballooning -- 8.5 Infinitesimal Scaling -- 8.6 Hybrid Finite Element-Boundary Element Method -- CHAPTER 9. HIGH-FREQUENCY PROBLEMS WITH FINITE ELEMENTS -- 9.1 Introduction -- 9.2 Finite Element Formulation in Two Dimensions -- 9.3 Boundary Element Formulation -- 9.4 Implementation of the Hybrid Method (HEM) -- 9.5 Evaluation of the Far-Field -- 9.6 Scattering Problems -- 9.7 Numerical Examples -- 9.8 Three Dimensional FEM Formulation for the Electric Field -- 9.9 Example -- CHAPTER 10. LOW-FREQUENCY APPLICATIONS -- 10.1 Time Domain Modeling of Electromechanical Devices -- 10.2 Modeling of Flow Electrification in Insulating Tubes -- 10.3 Coupled Finite Element and Fourier Transform Method for Transient Scalar Field Problems -- 10.4 Axiperiodic Analysis -- CHAPTER 11. SOLUTION OF EQUATIONS -- 11.1 Introduction -- 11.2 Direct Methods -- 11.3 LU Decomposition -- 11.4 Cholesky Decomposition -- 11.5 Sparse Matrix Techniques -- 11.6 The Preconditioned Conjugate Gradient Method -- 11.7 GMRES -- 11.8 Solution of Nonlinear Equations -- APPENDIX A. VECTOR OPERATORS -- APPENDIX B. TRIANGLE AREA IN TERMS OF VERTEX COORDINATES -- APPENDIX C. FOURIER TRANSFORM METHOD -- C.1 Computation of Element Coefficient Matrices and Forcing Functions -- APPENDIX D. INTEGRALS OF AREA COORDINATES -- APPENDIX E. INTEGRALS OF VOLUME COORDINATES -- APPENDIX F. GAUSS-LEGENDRE QUADRATURE FORMULAE, ABSCISSAE, AND WEIGHT COEFFICIENTS -- APPENDIX G. SHAPE FUNCTIONS FOR 1D FINITE ELEMENTS -- APPENDIX H. SHAPE FUNCTIONS FOR 2D FINITE ELEMENTS -- APPENDIX I. SHAPE FUNCTIONS FOR 3D FINITE ELEMENTS -- REFERENCES -- INDEX.
Abstract:
Electromagnetics is the foundation of our electric technology. It describes the fundamental principles upon which electricity is generated and used. This includes electric machines, high voltage transmission, telecommunication, radar, and recording and digital computing. This book will serve both as an introductory text for graduate students and as a reference book for professional engineers and researchers. This book leads the uninitiated into the realm of numerical methods for solving electromagnetic field problems by examples and illustrations. Detailed descriptions of advanced techniques are also included for the benefit of working engineers and research students. * Comprehensive descriptions of numerical methods * In-depth introduction to finite differences, finite elements, and integral equations * Illustrations and applications of linear and nonlinear solutions for multi-dimensional analysis * Numerical examples to facilitate understanding of the methods * Appendices for quick reference of mathematical and numerical methods employed.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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