2020-2021 / AERO0015-1

Mechanical design of turbomachinery

Duration

26h Th, 26h Pr, 30h Proj.

Number of credits

 Master of Science (MSc) in Aerospace Engineering, professional focus in turbomachinery aeromechanics (THRUST)5 crédits 
 Master of Science (MSc) in Aerospace Engineering5 crédits 

Lecturer

Jean-Claude Golinval, Florence Nyssen

Coordinator

Jean-Claude Golinval

Language(s) of instruction

English language

Organisation and examination

Teaching in the first semester, review in January

Schedule

Schedule online

Units courses prerequisite and corequisite

Prerequisite or corequisite units are presented within each program

Learning unit contents

Turbomachinery Rotordynamics : Types of Modelling, Computation of Forward and Backward Critical Speeds, Campbell Diagram, Stability Analysis, Harmonic and Transient Responses, Multi-rotor behavior, Design of bearings, Instability Phenomena. Dynamics of Blades and Disks : Campbell Diagram, External Excitation Sources, Aeroelastic Problems, Bird Impact. Static Analysis of Compressor Blades : Leaning, Effect of Pre-Twist, Bending/Torsion Coupling. Static Analysis of Disks : Design Criteria. Lifetime Calculations of Turbine Blades.

Learning outcomes of the learning unit

The objective is to present the methods used in the aeronautical industry to analyze the dynamical behavior of turbomachines and to design mechanical components of turbojet engines such as compressor and turbine blades and disks.

Prerequisite knowledge and skills

This course requires basic knowledge in structural dynamics and of the finite element method.

Planned learning activities and teaching methods

Projects will be assigned to the students. It will give hands-on practice with methods used for the mechanical design of turbomachines.

Mode of delivery (face to face, distance learning, hybrid learning)

The course is organised face-to-face during the 1st quadrimester.

Organisational adjustments related to the current health context

Groups
Students will be divided into 2 groups (A and B). The groups will be present in the lecture room alternately.
Forum
A forum is available on eCampus to ask questions on all the course materials at any time.
Adaptations
If the sanitary conditions do not allow to be present at the university, the exam will be organised orally by visio-conference.

Recommended or required readings

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.

The final grade will be based on the written exam and the homeworks. The written exam will consist in answering to questions on the course materials. A special attention will be devoted to the knowledge and to the understanding of the theoretical concepts. No document is allowed for the examination.
The assessment is based on the weighted geometric average of the projects and the exam. The final note is calculated as follows:
                  Final note = (Projects)^(0.6) * (Exam)^(0.4)

Work placement(s)

Organizational remarks

If the sanitary conditions do not allow to be present at the university, the exam will be organised orally by visio-conference.

Contacts

Jean-Claude GOLINVAL (JC.Golinval@uliege.be)
Florence NYSSEN (florence.nyssen@polymtl.ca)