## Ilya Karlin: Katalogdaten im Herbstsemester 2018 |

Name | Herr Prof. Dr. Ilya Karlin |

Adresse | Karlin, Ilya (Tit.-Prof.) ETH Zürich, LEO D 9.2 Leonhardstrasse 27 8092 Zürich SWITZERLAND |

Telefon | +41 44 632 66 28 |

ikarlin@ethz.ch | |

Departement | Maschinenbau und Verfahrenstechnik |

Beziehung | Titularprofessor |

Nummer | Titel | ECTS | Umfang | Dozierende | |
---|---|---|---|---|---|

151-0213-00L | Fluid Dynamics with the Lattice Boltzmann Method | 4 KP | 3G | I. Karlin | |

Kurzbeschreibung | The course provides an introduction to theoretical foundations and practical usage of the Lattice Boltzmann Method for fluid dynamics simulations. | ||||

Lernziel | Methods like molecular dynamics, DSMC, lattice Boltzmann etc are being increasingly used by engineers all over and these methods require knowledge of kinetic theory and statistical mechanics which are traditionally not taught at engineering departments. The goal of this course is to give an introduction to ideas of kinetic theory and non-equilibrium thermodynamics with a focus on developing simulation algorithms and their realizations. During the course, students will be able to develop a lattice Boltzmann code on their own. Practical issues about implementation and performance on parallel machines will be demonstrated hands on. Central element of the course is the completion of a lattice Boltzmann code (using the framework specifically designed for this course). The course will also include a review of topics of current interest in various fields of fluid dynamics, such as multiphase flows, reactive flows, microflows among others. Optionally, we offer an opportunity to complete a project of student's choice as an alternative to the oral exam. Samples of projects completed by previous students will be made available. | ||||

Inhalt | The course builds upon three parts: I Elementary kinetic theory and lattice Boltzmann simulations introduced on simple examples. II Theoretical basis of statistical mechanics and kinetic equations. III Lattice Boltzmann method for real-world applications. The content of the course includes: 1. Background: Elements of statistical mechanics and kinetic theory: Particle's distribution function, Liouville equation, entropy, ensembles; Kinetic theory: Boltzmann equation for rarefied gas, H-theorem, hydrodynamic limit and derivation of Navier-Stokes equations, Chapman-Enskog method, Grad method, boundary conditions; mean-field interactions, Vlasov equation; Kinetic models: BGK model, generalized BGK model for mixtures, chemical reactions and other fluids. 2. Basics of the Lattice Boltzmann Method and Simulations: Minimal kinetic models: lattice Boltzmann method for single-component fluid, discretization of velocity space, time-space discretization, boundary conditions, forcing, thermal models, mixtures. 3. Hands on: Development of the basic lattice Boltzmann code and its validation on standard benchmarks (Taylor-Green vortex, lid-driven cavity flow etc). 4. Practical issues of LBM for fluid dynamics simulations: Lattice Boltzmann simulations of turbulent flows; numerical stability and accuracy. 5. Microflow: Rarefaction effects in moderately dilute gases; Boundary conditions, exact solutions to Couette and Poiseuille flows; micro-channel simulations. 6. Advanced lattice Boltzmann methods: Entropic lattice Boltzmann scheme, subgrid simulations at high Reynolds numbers; Boundary conditions for complex geometries. 7. Introduction to LB models beyond hydrodynamics: Relativistic fluid dynamics; flows with phase transitions. | ||||

Skript | Lecture notes on the theoretical parts of the course will be made available. Selected original and review papers are provided for some of the lectures on advanced topics. Handouts and basic code framework for implementation of the lattice Boltzmann models will be provided. | ||||

Voraussetzungen / Besonderes | The course addresses mainly graduate students (MSc/Ph D) but BSc students can also attend. | ||||

151-1633-AAL | Energy ConversionBelegung ist NUR erlaubt für MSc Studierende, die diese Lerneinheit als Auflagenfach verfügt haben. Alle andere Studierenden (u.a. auch Mobilitätsstudierende, Doktorierende) können diese Lerneinheit NICHT belegen. | 4 KP | 9R | I. Karlin, G. Sansavini | |

Kurzbeschreibung | Grundlagen der Thermischen Wissenschaften in Zusammenhang mit Energieumwandlung | ||||

Lernziel | Kennen lernen und vertraut werden mit den grundlegenden Prinzipien der fundamentalen thermischen Wissenschaften (Thermodynamik, Wärmeübertragung usw.) sowie deren Verknüpfung zu den Technologien der Energieumwandlung. | ||||

Inhalt | Thermodynamik (erstes und zweites Gesetz), Wärmeübertragung (Leitung/ Konvektion/Strahlung), technische Anwendungen | ||||

Skript | Die Präsentationsfolien werden jede Woche per E-Mail verschickt. | ||||

Literatur | 1. Introduction to Thermodynamics and Heat Transfer, 2nd ed. by Cengel, Y. A., McGraw Hill; 2. Fundamentals of Engineering Thermodynamics, 6th ed. by Moran & Shapiro, Wiley | ||||

Voraussetzungen / Besonderes | Dieser Kurs steht Studierenden ausserhalb von D-MAVT offen. | ||||

151-1633-00L | Energy ConversionThis course is intended for students outside of D-MAVT. | 4 KP | 3G | I. Karlin, G. Sansavini | |

Kurzbeschreibung | This course is tailored to provide the students with a common introduction on thermodynamics and heat transfer. Students can gain a basic understanding of energy, energy interactions, and various mechanisms of heat transfer as well as their linkage to energy conversion technologies. | ||||

Lernziel | Students will be able analyze and evaluate energy conversion and heat exchange processes from the thermodynamic perspective. 1. They will be able to describe a thermodynamic system and its state in the using phase diagrams for pure substances and to apply the first law of thermodynamics, energy balances, and mechanisms of energy transfer to or from a system. 2. Students will be able to describe processes/changes of state in the phase diagrams and evaluate start and end states and the exchange of heat and power in the process. 3. They will be able to introduce and apply the entropy and exergy balance to closed and open systems. 4. They will be able to apply the second law of thermodynamics to power cycles and processes, and determine the expressions for the thermal efficiencies and coefficients of performance for heat engines, heat pumps, and refrigerators. They will be able to evaluate the thermodynamic performance of cycles using phase diagrams and critically analyze the different parts of cycles and propose improvements to their efficiency. 5. Students will be able to apply energy balances to reacting systems for both steady-flow control volumes and fixed mass systems. 6. At the end of the course, they will be able to apply the basic mechanisms of heat transfer (conduction, convection, and radiation), and Fourier's law of heat conduction, Newton's law of cooling, and the Stefan–Boltzmann law of radiation. Finally, students will be able to solve various heat transfer problems encountered in practice. | ||||

Inhalt | 1. Thermodynamic systems, states and state variables 2. Properties of substances: Water, air and ideal gas 3. Energy conservation in closed and open systems: work, internal energy, heat and enthalpy 4. Second law of thermodynamics and entropy 5. Energy analysis of steam power cycles 6. Energy analysis of gas power cycles 7. Refrigeration and heat pump cycles 8. Maximal work and exergy analysis 9. Mixtures and psychrometry 10. Chemical reactions and combustion systems 11. Heat transfer | ||||

Skript | Lecture slides and supplementary documentation will be available online. | ||||

Literatur | Thermodynamics: An Engineering Approach, by Cengel, Y. A. and Boles, M. A., McGraw Hill | ||||

Voraussetzungen / Besonderes | This course is intended for students outside of D-MAVT. Students are assumed to have an adequate background in calculus, physics, and engineering mechanics. |