Thesis supervisor: László Kollár
Location of studies (in Hungarian): ELTE Savaria Abbreviation of location of studies: ELTE
Description of the research topic:
The project aims to determine the shape of wind turbine blades considering the prevailing icing conditions of the wind farm, and to evaluate the performance of the wind turbine under such conditions. Ice accretion on rotor blades considerably worsens the aerodynamic performance of wind turbine systems by reducing lift generation and increasing drag, which leads to power loss up to 30% at sites with particularly high risk of icing. Furthermore, ice accumulation also affects safety and lifetime of the wind turbines. Therefore, effort should be made to reduce the effects of ice accretion, which enables wind turbines to operate under wider operating conditions. An inverse design methodology is applied to find a blade shape if the required pressure or velocity distribution around the blade is known. In order to obtain ice accretion on the blade, the air velocity field in the proximity of the blade has to be determined; the trajectories of water droplets are simulated, which provides the local ratio of droplets that hit the blade surface; finally the local ratio of droplets that freeze to the blade surface is calculated from the heat balance. As a result, the local rate of accreted ice mass and the shape of the iced blade are obtained. Simulation of the air flow around the iced blade provides information on how the aerodynamic performance of the wind turbine changes due to ice accretion on the blade. Taken the effects of icing on the aerodynamics of the blade into account in the design process helps the designer find the blade shape so that ice accretion influences aerodynamic performance for the least possible extent.
Required language skills: English Further requirements: MSc in engineering, physics or meteorology
Number of students who can be accepted: 1
Deadline for application: 2018-05-31
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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