## Jasmin Smajic: Catalogue data in Spring Semester 2021 |

Name | Dr. Jasmin Smajic |

Address | Dep. Inf.techno.u.Elektrotechnik ETH Zürich, ETZ K 90 Gloriastrasse 35 8092 Zürich SWITZERLAND |

Telephone | +41 44 633 89 88 |

jasmin.smajic@ief.ee.ethz.ch | |

Department | Information Technology and Electrical Engineering |

Relationship | Lecturer |

Number | Title | ECTS | Hours | Lecturers | |
---|---|---|---|---|---|

227-0160-00L | Fundamentals of Physical Modeling and Simulations | 6 credits | 2V + 2U + 1P | J. Smajic | |

Abstract | Mathematical description of different physical phenomena and numerical methods for solving the obtained equations are discussed. The course presents the fundamentals of mathematical modeling including ordinary and partial differential equations along with boundary and initial conditions. Finite Difference Method and Finite Element Method for solving boundary value problems are shown in detail. | ||||

Objective | After completing this course a student will understand the main idea of representing physical phenomena with mathematical equations, will be able to apply an appropriate numerical method for solving the obtained equations, and will possess the knowledge to qualitatively evaluate the obtained results. | ||||

Content | a. Introduction to physical modeling and simulations b. Numerical methods for solving boundary (initial) value problems b.i. Finite difference method (FDM) b.ii. Finite element method (FEM) c. Boundary (initial) value problems of different physical phenomena c.i. Static and dynamic electric current distribution in solid conductors c.ii. Static und dynamic electric charge transport in semiconductors c.iii. Induced eddy currents in low frequency range (with numerous examples from the area of electrical energy technology) c.iv. Wave propagation in the RF-, microwave-, and optical frequency range (with numerous examples relevant for communication technology) c.v. Static and dynamic temperature distribution in solid bodies (with numerous examples relevant for electrical energy technology) c.vi. Static and dynamic mechanical structural analysis (with numerous examples from the area of MEMS technology) | ||||

Lecture notes | Lecture notes, Matlab programs, exercises and their solutions will be handed out. | ||||

Literature | J. Smajic, “How To Perform Electromagnetic Finite Element Analysis”, The International Association for the Engineering Modelling, Analysis & Simulation Community (NAFEMS), NAFEMS Ltd., Hamilton, UK, 2016. | ||||

Prerequisites / Notice | Fundamentals of Electromagnetic Fields, and Bachelor Lectures on Physics. | ||||

227-0536-00L | Multiphysics Simulations for Power Systems This course is defined so and planned to be an addition to the module "227-0537-00L Technology of Electric Power System Components". However, the students who are familiar with the fundamentals of electromagnetic fields could attend only this course without its 227-0537-00-complement. | 4 credits | 2V + 2U | J. Smajic | |

Abstract | The goals of this course are a) understanding the fundamentals of the electromagnetic, thermal, mechanical, and coupled field simulations and b) performing effective simulations of primary equipment of electric power systems. The course is understood complementary to 227-0537-00L "Technology of Electric Power System Components", but can also be taken separately. | ||||

Objective | The student should learn the fundamentals of the electromagnetic, thermal, mechanical, and coupled fields simulations necessary for modern product development and research based on virtual prototyping. She / he should also learn the theoretical background of the finite element method (FEM) and its application to low- and high-frequency electromagnetic field simulation problems. The practical exercises of the course should be done by using one of the commercially available field simulation software (Infolytica, ANSYS, and / or COMSOL). After completing the course the student should be able to properly and efficiently use the software to simulate practical design problems and to understand and interpret the obtained results. | ||||

Content | 1. Elektromagnetic Fields and Waves: Simulation Aspects (1 lecture, 2 hours) a. Short review of the governing equations b. Boundary conditions c. Initial conditions d. Linear and nonlinear material properties e. Coupled fields (electro-mechanical and electro-thermal coupling) 2. Finite Element Method for elektromagnetic simulations (5 lectures and 3 exercises, 16 hours) a. Scalar-FEM in 2-D (electrostatic, magnetostatic, eddy-currents, etc.) b. Vector-FEM in 3-D (3-D eddy-currents, wave propagation, etc.) c. Numerical aspects of the analysis (convergence, linear solvers, preconditioning, mesh quality, etc.) d. Matlab code for 2-D FEM for learning and experimenting 3. Practical applications (5 lectures and 5 exercises, 20 hours) a. Dielectric analysis of high-voltage equipment b. Nonlinear quasi-electrostatic analysis of surge arresters c. Eddy-currents analysis of power transformers d. Electromagnetic analysis of electric machines e. Very fast transients in gas insulated switchgears (GIS) f. Electromagnetic compatibility (EMC) | ||||

227-0707-00L | Optimization Methods for Engineers | 3 credits | 2G | J. Smajic | |

Abstract | First half of the semester: Introduction to the main methods of numerical optimization with focus on stochastic methods such as genetic algorithms, evolutionary strategies, etc. Second half of the semester: Each participant implements a selected optimizer and applies it on a problem of practical interest. | ||||

Objective | Numerical optimization is of increasing importance for the development of devices and for the design of numerical methods. The students shall learn to select, improve, and combine appropriate procedures for efficiently solving practical problems. | ||||

Content | Typical optimization problems and their difficulties are outlined. Well-known deterministic search strategies, combinatorial minimization, and evolutionary algorithms are presented and compared. In engineering, optimization problems are often very complex. Therefore, new techniques based on the generalization and combination of known methods are discussed. To illustrate the procedure, various problems of practical interest are presented and solved with different optimization codes. | ||||

Lecture notes | PDF of a short skript (39 pages) plus the view graphs are provided | ||||

Prerequisites / Notice | Lecture only in the first half of the semester, exercises in form of small projects in the second half, presentation of the results in the last week of the semester. | ||||

401-5870-00L | Seminar in Electromagnetics for CSE | 4 credits | 2S | J. Smajic, J. Leuthold | |

Abstract | Discussion of fundamentals of electromagnetics and various applications (wave propagation, scattering, antennas, waveguides, bandgap materials, etc.). Numerical methods suited for the analysis of electromagnetic fields and for the optimal design of electromagnetic structures. | ||||

Objective | Knowledge about classical electromagnetics, main applications, and appropriate numerical methods. | ||||

Prerequisites / Notice | Students study a selected topic and give a 15-30 minutes presentation towards the end of the semester. The topic and the supervisor is defined in a discussion with J. Smajic or J. Leuthold. |