We are pleased to announce the seminar of 

Pr. Leonardo CHAMORRO, Associate professor, Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, USA on "Turbulence and Structure Interaction : Implications to Wind Turbine and Wind Farm Power Fluctuations". 

On 06/04/2023 at 13h15 (CET) via Teams.  

Abstract :  

The interaction between turbulence and structures involves dynamics characterized by multiscale, nonlinear processes. Despite its complexity, close inspection of selected problems reveals common and distinctive effects of turbulence. Here, I will discuss some of those features in three (very) different cases : the rotation of rigid bodies, the motion of flexible plates, and the power output of wind turbines and wind farms. The underlying dynamics of these structures is fundamentally described from basic concepts. Laboratory experiments using hotwire anemometry, particle tracking velocimetry (PTV), and particle image velocimetry (PIV) combined with theory are used to unravel and explain the characteristic power-law decays of the spectra of rotation and oscillation of plates as well as the power output of wind turbines. We will show that the energy-containing eddies and the inertial subrange of the incoming velocity spectrum strongly modulate the unsteady motions of structures and turbine power. A derived tuning-free model based on a transfer function and turbulence spectrum, supported with experiments, reveals shared spectral scaling across the cases.

Biography (EN) :

Dr. Chamorro is an Associate professor in the Department of Mechanical Science and Engineering at the University of Illinois at Urbana-Champaign and is affiliated with the Departments of Aerospace Engineering, Civil and Environmental Engineering, and Geology. His research interests include turbulence, particle dynamics, boundary layer processes, aerodynamics, turbulence and structure interaction, wind energy, marine and hydrokinetic energies, and the development of advanced flow diagnostics. He has published 110 peer-reviewed articles in leading journals, has participated in over 120 presentations in technical symposia, and serves as the fellowship panel’s scientific chair on Energy, Electrical Eng, Electronics and Mechanics (W&T7) at the Research Foundation Flanders (FWO) in Belgium and the board of directors of the UMERC (University Marine Energy Research Community). Chamorro is Associate Editor of the Journal of Renewable and Sustainable Energy, the Journal Frontiers in Energy Research, the Journal of Energy Engineering, and an academic editor and member of the editorial board of the journal Energies. He has been a reviewer of forty peer-reviewed journals. He leads the Renewable Energy and Turbulent Environment group, which uses a versatile experimental approach that combines state-of-the-art techniques, including 2D/3D particle image velocimetry, computer vision, and 3D particle tracking velocimetry.