Unsteady simulation of flow in micro vertical axis wind turbine
TypeCommunications avec actes
Though wind turbines and windmills have been used for centuries, the application of aerodynamics technology to improve reliability and reduce costs of wind-generated energy has only been pursued in earnest for the past 40 years. Today, wind energy is mainly used to generate electricity. Wind is a renewable energy source. Power production from wind turbines is affected by certain conditions: wind speed, turbine speed, turbulence and the changes of wind direction. These conditions are not always optimal and have negative effects on most turbines. The present turbine is supposed to be less affected by these conditions because the blades combine a rotating movement around each own axis and around the nacelle’s one. Due to this combination of movements, flow around this turbine can be more highly unsteady, because of great blade stagger angles. The turbine has a rotor with three straight blades of symmetrical airfoil. Paper presents unsteady simulations that have been performed for one wind velocity, and different initial blades stagger angles. The influence of interaction of blades is studied for one specific constant rotational speed among the four rotational speeds that have been studied.
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BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; DOCKTER, Aurore; BOIS, Gérard (2011)Today, wind energy is mainly used to generate electricity and more and more with a renewable energy source character. Power production from wind turbines is affected by several conditions like wind speed, turbine speed, ...
ISSA, Abir; BAYEUL-LAINE, Annie-Claude; BOIS, Gérard (CMFF - Conference on Modelling Fluid Flow, 2009)Water for irrigation, domestic and industrial supply as well for some power generation is normally drawn directly from rivers or from reservoir through sumps. The flow at the pump section sump may have large effects on the ...
VAWT with controlled blades : influence of wake of one turbine on power coefficient on the next turbine BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; BOIS, Gérard (IC-EpsMsO, 2013)Power production from wind turbines is affected by several conditions like wind speed, turbine speed, turbine design, turbulence, changes of wind direct ion, wake of previous turbines. These conditions are not always optimal ...
BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; BOIS, Gérard (2012)The vertical axis wind turbine studied in this paper combine two rotations: one rotating movement of each blade around its own axis and one rotating movement around turbine’s axis. The aim of this paper is to analyse the ...
BAYEUL-LAINE, Annie-Claude; DOCKTER, Aurore; BOIS, Gérard; SIMONET, Sophie (2012)Wind energy is more and more used as a renewable energy source character. The present wind turbine is a small one which allows to be used on roofs or in gardens to light small areas like publicity boards, parking, roads ...