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Ecole nationale supérieure de l'Énergie, l'Eau et l'Environnement
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Engineering school in energy, water and environment
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Sustainable Marine Energies - Fluid/Structure Interractions - 5EUS5EMR

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  • Number of hours

    • Lectures : 32.0
    • Tutorials : -
    • Laboratory works : 22.0
    • Projects : -
    • Internship : -
    ECTS : 5.0
  • Officials : Thierry MAITRE

Goals

This course is divided into two parts. The first part aims to provide a better understanding of the tidal and wind turbine blades design (aerodynamic design, turbine performance and control). A 2h conference will also bring to the students general knowledge about the state of the art of marine renewable energy sources (offshore wind, tidal and wave turbines, ocean thermal energy conversion and osmotic power). The second part deals with static and dynamic aeroelasticity.

Content

This course is a mix of lectures and tutorials organised as follows:
I. Wind and tidal turbines: 16h
I.1 The Betz theory: 2h
I.2 Wing sections aerodynamics: 2h
I.3 Rotor design: 2h
I.4 Aerodynamic control of the rotor: 2h
I.5 Electrical control of the rotor: 2h
I.6 Marine energy sources (with the test): 4h
I.7 Duct design for tidal turbines: 2h

II. Aeroelasticity: 16h
II.1 Aerodynamics and strength of materials basics
II.2 Static aeroelasticity
II.3 Dynamic aeroelasticity

3 mini-projects are included in the course:
- MP1 (6h): Aerodynamic design of a wind turbine blade and calculation of the corresponding rotor performance
- MP2 (4h): Annual energy production of a wind turbines
- MP3 (12h supervised + 4h without supervision): Numerical study (CFD/FEA) of a multi-MW wind turbine blade deformation under aerodynamic load.

MP1 allows the students to become familiar with the aerodynamic design of a horizontal-axis wind turbine rotor by calculating the twist angle and chord length variations over the span of a 45m blade.
MP2 deals with variable speed rotors and variable pitch blades technologies through the determination of the annual energy production (AEP) at two different sites.
MP3 consists in the fluid-structure interaction (FSI) study of a wind turbine blade. 4 operating conditions are considered: cut-in, rated, cut-out and survival wind speeds. A CFD simulation is carried out in a first step to obtain the pressure distribution on the blade. This pressure distribution is then used in a FEA simulation to derive the corresponding blade deformation (one-way coupling). ANSYS workbench (Fluent/Mechanical) is used for this project, which gives students the opportunity to develop their skills in this simulation tool.

Prerequisites

Both parts of the course require basics of aerodynamics. The FSI part would benefit from basics in strength of materials as well.

Tests

  • Specific credits: this course brings 6.0 ECTS to students in Year 2 Master Fluid Mechanics and Energetics (M2 FME)
  • Specific credits: this course brings 6.0 ECTS to students in Year 2 Master ENTECH (M2 ENTECH)

1 marine energies test: Test (1h)
1 final Exam : Exam (3h)
3 mini project: MP1, MP2 and MP3

Continuous Control mark : CC=(Test+MP1+MP2+3MP3)/6
Final Control mark: FC=Exam
Final Mark for the module=(CC+FC)/2

CC 50% + CT 50%

The exam is given in english only FR

Calendar

The course exists in the following branches:

see the course schedule for 2019-2020

Additional Information

Course ID : 5EUS5EMR
Course language(s): FR

You can find this course among all other courses.

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Date of update February 8, 2017

Grenoble INP Institut d'ingénierie Univ. Grenoble Alpes