S & R IAU Researcher Designs Wind Turbine Blade Using Aeroacoustic

Monday, May 21, 2018 - 13:30

A researcher of Islamic Azad University, Science and Research branch, has designed and made wind turbine blade through applying aeroacoustic approach in order to control noise reduction caused by wind turbine.

According to an ISCA report, the researcher, Saeedeh Hadavand explained that Aeroacoustics is a branch of acoustics that studies noise generation via either turbulent fluid motion or aerodynamic forces interacting with surfaces.

Aero-acoustics provides such approximations and at the same time a definition of the acoustical field as an extrapolation of an ideal reference flow. The difference between the actual flow and the reference flow is identified as a source of sound.

As she said, the flow around a wind turbine is highly turbulent and the aerodynamically generated noise from a wind turbine is due to the unsteady flow over the surface of the wind turbine blade, so the researcher tried to make an optimized blades with aerodynamic performance to make less noise.

Hadavand noted that the effect of distance on sound was one of the issues discussed in this study and the result shows that the sound produced by wind turbines decrease logarithmically.

“Optimizing airfoil and using an automatic system that can check the angle continuously and place it at the right one, are some features that must be considered in better wind turbines efficiency,” she declared.

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