Berlin 2024 – wissenschaftliches Programm
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AKE: Arbeitskreis Energie
AKE 3: Poster
AKE 3.7: Poster
Dienstag, 19. März 2024, 12:00–14:00, Poster C
Simulation of noise dampening during construction of offshore windparks — •Tobias Bollig1,2, Angela Thränhardt1, Thomas Blaudeck2,4, and Fabian Teichert2,3,4 — 1Institute of Physics, Chemnitz University of Technology, Chemnitz, Germany — 2Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz Universitity of Technology, Chemnitz, Germany — 3Center for Microtechnologies, Chemnitz University of Technology, Chemnitz, Germany — 4Fraunhofer Institute for Electronic Nano Systems (ENAS), Chemnitz, Germany
Because of the growing relevance of offshore windparks due to the "Energiewende", the regulations of building these giant wind turbines are more important than ever. The construction of the foundations of the wind turbines creates huge sound emissions for the surrounding marine life. To dampen these negative effects, there are different ways to reduce the sound emission during construction. This work presents a new simulation approach of the sound dampening characteristics of the most commonly used technique called big bubble curtain. We simulate them using the finite element method in the open source software "Elmer". Previous investigations focused on 3D simulations of the bubble curtain as a heterogeneous medium. We implement a numerical calculation based on the theory of the effective medium to deliver an extremely time-efficient method, especially considering a wide range of parameters to be investigated in future projects. First results show that 2D simulations achieve roughly the same sound dampening as is available from data sheets of industrial used bubble curtains.
Keywords: Big Bubble Curtain; Offshore Windpark; FEM; Sound Emission; Marine Life