| Course code | TUD04 |
| Course title | Introduction to Wind Turbine Aerodynamics |
| Institution | Delft University of Technology |
| Course address | Kluyverweg 1, 2629 HS Delft, The Netherlands |
| City | Delft |
| Minimum year of study | 3rd year |
| Minimum level of English | Good |
| Minimum level of French | None |
| Key words | Wind Energy, Wind Turbine Aerodynamics, Rotor Aerodynamics |
| Language | English |
| Professor responsible | Carlos Simao Ferreira |
| Telephone | +31 15 278 20 73 |
| Fax | +31 15 278 53 47 |
| c.j.simaoferreira@tudelft.nl | |
| Participating professors | |
| Number of places | Minimum: 20, Maximum: 40, Reserved for local students: |
| Objectives | T The lecture is an introduction course to wind turbine rotor aerodynamics Learning objectives (introductory level): 1-The student is able to, by combining previous knowledge in fluid dynamics and Newtonian physics, to design/derive models which can represent the aerodynamics of different rotor configurations. 2-The student is able to appraise different models, and criticize on their fidelity. 3- The student can analyze complex rotor flows (rotors in yaw, wind farms, etc), not only identifying and summarizing the main fluid phenomena, but also evaluating their interaction and integrate different models to analyze the flow; on this, the student is able to combine the different models, evaluating each sub-model’s limitations and overlap between models. 4- The student is able to design a rotor from an aerodynamic perspective |
| Programme to be followed | 1. Introduction to the course: learning objectives, structure, assignments and evaluation.2. Introduction to rotary wing aerodynamics. Applications in aircraft, propulsion, fans and wind turbines3. Conservation laws. Actuator disk/momentum theory and its limitations. Helicopter rotor vertical flight and “windmill brake” state. Figure of merit. Wind turbine Betz limit. Limits of the actuator disk model. Generalization on Lift and drag devices.4. Generation of the wake. The wake as the source of an induction field. Vortex flow. Loads and vorticity. Euler equations. Biot-Savart law. Derivation of the actuator-vortex wake model5. Derivation of potential flow and construction of solutions using potential flow. Circulation and aerofoil aerodynamics. Helmholtz theorems. Discretising the rotor in finite blades. Modelling 3D finite blades using vortex models. Modelling a constant circulation rotor with 2 blades using 3D vortex models. Formulating a system of solution for non-constant circulation distribution. Quiz on wake generation and vortex models.6. Viscous aerofoil aerodynamics. Implementation of viscous effects in rotor vortex model, using a spanwise discretization. Aerodynamic characteristics of airfoils for rotor application. Aerodynamic properties of pitch and stall controlled wind turbine. Wind turbine rotor blade design.7. Derivation of BEM - Blade element–momentum method. Correction for finite nr. of blades and heavily loaded rotors.8. Unsteady aerodynamics. Theodorsen’s Theory. Modelling of the unsteady aerodynamics of an aerofoil in pitch. Trailing and shed vortices. Sources of unsteadiness. Dynamic stall. Modelling dynamic stall on a pitching aerofoil. |
| Prerequisites | 3rd year engineering Newtonian physics and mathematics; Fluid mechanics |
| Course exam | Course assignment + online examination |
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