FR
EN
Aéro/hydrodynamiqueENERGIE EOLIENNE (GSI)
4ECTS (EU)
1Coefficient
16:00Hours
Séquencement
Learning objectives
- Understand the impact of body geometry on aerodynamic performance and the value of using a profiled body.
- Know the general characteristics of a flow around a wing profile and the role of incidence.
- Understand the problem of modeling turbulent flow in CFD software.
- Simulate digitally (with Fluent Ansys) flow around a wing profile to calculate its aerodynamic coefficients.
- Experimentally measure the aerodynamic coefficients of a wind tunnel wing.
Prerequisites
| Module | Teaching unit | Semester |
|---|---|---|
| Fluid Mechanics 1 | Mechanical Engineering 2 | S6 |
Program
- Aerodynamics of simple bodies
- Limit layer concept
- Aerodynamic efforts and coefficients
- Trail of obstacles with progressive curvature / sharp edges / profiles
- Aerodynamics of wing profiles
- 2D profiles:
- General on flow
- Concept of stalling
- Pressure coefficient and aerodynamic coefficients
- Influence of profile shape
- Influence of Reynolds Number
- Brief history of wing profiles
- Study of some 2D profiles (NACA profiles, new specific profiles...)
- 3D wing finished
- Limit layer and turbulence
- Reminders: laminar and turbulent diets, kinematic and dynamic viscosities, Navier-Stokes equations
- Turbulence models
- TP Plan:
- Test TP on Return Windmill (2h): characterization of aerodynamic coefficients of a wing profile
- Digital TP on CFD software Ansys Fluent (6h): obtaining aerodynamic coefficients by numerical simulation
Assessment
- Presentation of the work done in TP (type slideshow with comments)
- Table control of the acquisition of basic aerodynamic knowledge
References
- R. Comolet, Experimental Fluid Mechanical, Volume II, 4th edition, 1994
- P. Rebuffet, Experimental Aerodynamics, 1969
- P. Hamon, Vibration of structures coupled with wind, Editions de l'Ecole Polytechnique, 2006
- T. Faure, Dynamics of Applied Fluids, Dunod Editions, 2008
- P.L. Viollet et al., Applied Fluid Mechanics, 2002
- S. Selig et al., Summary of Low-Speed Airfoil Data, vol. 3, 1997
- Mr. Sadray, Aircraft performance analysis, 2009
Skills
5| Ref. | Verb | Description | Level |
|---|---|---|---|
| C1_2 | define | Know the different classes of geometries and their associated general aerodynamic performance. | 1 |
| C1_2 | analyze | Know the general evolution of aerodynamic performance of a wing profile according to the number of Reynolds and incidence. | 3 |
| C1_2 | appraise | Appreciate the impact of turbulence on the aerodynamic performance of a body. | 4 |
| C1_2 | design | Choose a profile that meets the required aerodynamic performance. | 3 |
| C1_2 | estimate | Estimate the aerodynamic performance of a profile by numerical simulation and/or measurements with an aerodynamic balance in a wind tunnel. | 4 |