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Aerodynamic analysis of wind turbines with and without the application of flow control devices

Kierownik projektu: Piotr Doerffer

Instytut Maszyn Przepływowych PAN w Gdańsku

Gdańsk

Streszczenie projektu

During the last decades the use of wind turbines has been increasing together with their size and power output. The aerodynamic performance increase and noise reduction have been a constant area of work and development during this period of time. Several solutions have been implemented for decreasing the flow separation on the blade, big source of aerodynamic force decreasing on the blade, as well as, noise generation.

The IMP PAN is making a big effort on the flow control devices study. Our recently group work in the new rods vortex generators (RVG) has shown a important contribution to the control of the boundary layer, decreasing the flow separation and even avoiding it. These devices generate vorticity to control the boundary layer carrying high momentum particles from the higher flow layers to the ones closer to the wall with low momentum, energizing the nearly detached boundary layer.

Studied the effect of these devices in the wind tunnel, the next step is their application to the wind turbine blades as a strategy to decrease the separation on the blades and the noise associated to the separation bubbles. The NREL Phase VI Wind Turbine is being employed as validation case. The clean simulation of the NREL Phase VI showed already promising results for the application of the previous technology. The application of the RVG to blade sections is proving its value for certain configurations. The application to the complete wind turbine model is the next step in the process and demands greater computational resources.

The results obtained from the simulations will be part of the MARE-WINT project, in which, the IMP PAN is taking part through the work of 2 fellows. The MARE-WINT project is an international project inside the European Seventh Framework Programme of the 'Marie Curie Actions' ( FP7-PEOPLE-2012-ITN Marie-Curie Action: "Initial Training Networks").

In addition the results of the simulations will become a fundamental part of the thesis that the researcher is carrying out in the described area.

The simulations will be carried out through the use of the software Fine Turbo from NUMECA International.

The introduction of flow control devices in the CFD numerical simulations has shown to be highly computational time demanding being needed the use of big computational resources.

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