CFD Based Multibody Dynamics Approach in Horizontal Axis Wind Turbine

In the development of new large megawatt size horizontal wind turbines,air pressure loads on various points of blade surfacesis important for optimizing the energy yield from wind turbines. The effects of active aerodynamic load on the surface points of the blade for horizontal axis wind turbines were investigated.The performance studieshave been carried out with conventional three bladed curved rotors. The interplay between different strategies is discussed in the paper. The procedure for multi body aerodynamic characterization is illustrated with a real blade calculation and aerodynamics design is addressed.

The primary goal of wind energy technology is to minimize the cost of energy from wind power in order to make the cost of energy more competitive compared to other energy sources. How to reduce the cost of wind turbine per unit of energy is an important consideration in modern wind turbine researches. One prevailing trend in wind turbine technology throughout the past couple of decades has been growth in the size of the rotor to realize the advantages of scale and the generally higher winds available at greater heights. Advancement of the current state of the art has been achieved through efficient structural design and optimal material usage to produce the necessary structural efficiency for blades up to 60 meters in length. Geometrically consistent up scaling of blade length shows that the surface stresses at the blade surface due to aero dynamical, gravitational loads grow in proportion to the length of the blade, while the flap due to aerodynamic loads are independent of the size of the

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