Duration
15h Th, 15h Pr
Number of credits
| Master of Science (MSc) in Electromechanical Engineering | 3 crédits |
Lecturer
Language(s) of instruction
French language
Organisation and examination
Teaching in the first semester, review in January
Schedule
Units courses prerequisite and corequisite
Prerequisite or corequisite units are presented within each program
Learning unit contents
Current energy conversion systems are submitted to a growing demand in terms of flexibility. This flexibility requires an accurate characterization of the components dynamic behavior under varying boundary conditions, which in turns allows to set up optimal control strategies.
This course is an introduction to the dynamic modeling of thermal systems. It is subdivided into three main parts.
The first part is a review of the fundamental concepts and of the basic definitions. The numerical methods required to solve dynamic problems are briefly described; initialization algorithms (Newton), integration algorithms (Euler, DASSL, etc.), index reduction (Pantelides), etc... The overal solution process is described by means of simples examples highlighting the most commong numerical issues (Chattering, stiffness, initialization, etc.).
The second part describes more advanced concepts such as object-oriented modeling (inheritance, connectors, ...) and acausal modeling. This is achieved through the open-source language Modelica, a modeling platform for complex non-linear systems. In the exercice classes, the student will experiment the theory through simple examples. More complex systems will then be developed using, among others, a model library developed at the University of Liege.
In the final part, the student will face practical problems, such as the modeling and the control of a thermal power plant or of a refrigeration cycle.
Learning outcomes of the learning unit
At the end of the course, the student will be able to:
- Structure and formalize a problem related to the dynamic modeling of thermal systems
- Understand and use the required solution algorithms
- Use a reference language (Modelica) as passive (use and interconnexion of already-available components) or active (develpments of new models) user.
- Understand and describe the causal relations occuring in thermodynamic systems, and control them using linear controllers.
Prerequisite knowledge and skills
Recommended:
MECA0037-1 Centrales thermiques et cogénération
MECA0006-1 Systèmes de production de froid et de chaleur
PROJ0001-1 Introduction aux méthodes numériques et projet
Prerequisites:
MECA0002-1 Thermodynamique appliquée et introduction aux machines thermiques
SYST0003-1 Linear control systems
Planned learning activities and teaching methods
The course is based on 'ex-cathedra' lectures and on exercice classes
Mode of delivery (face to face, distance learning, hybrid learning)
Face-to-face lectures.
Organisational adjustments related to the current health context
Recommended or required readings
Slides used during the lectures, as well as the exercice files may be downloaded from eCampus.
Assessment methods and criteria
Below you will find information on the evaluation methods planned for in-person and remote exams as well as those planned for hybrid sessions. Depending on how the health crisis evolves, the chosen method will be communicated to you no later than one month before the start of the exam session.
Theory is evaluated through an oral examination and computer excercices. It accounts for 60% of the final note. This includes the numerical methods as well as the understanding of the thermodynamic systems studied during the classes.
The 40 remaining percents will be based on an individual project on Modelica.
NB: The individual project is compulsory. The exam cannot be defended if it has not been submitted on time.
NB2: The note of the indivual project can be reported from the first to the second session.
Work placement(s)
Organizational remarks
To be defined
Contacts
Sylvain Quoilin, Labo. de Thermodynamique (B49)
Phone : +32 4 366 48 22
Fax : +32 4 366 48 12
Mailto : squoilin@ulg.ac.be
Pierre Dewallef, Labo. de Thermodynamique (B49)
tél: +32 (0)4 366.99.95
fax: +32 (0)4 366.48.12
email: p.dewallef@ulg.ac.be