Advanced concepts for the reduction of flow-induced noise generation, propagation and transmissionDate: Nov. 23, 2020 - Nov. 26, 2020
This lecture series is part of the SmartAnswer project which has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 722401.
A step change in our noise mitigation strategies is required in order to meet the environmental targets or regulations defined for a number of sectors of activity affecting people through noise exposure, such as transportation, building ventilation systems and wind energy production. Besides being a hindrance to our daily life, noise emission is also a competitive issue for industrial stakeholders aiming at better passenger comfort, and quieter domestic appliances in our homes and working places.
New concepts and technological solutions have been emerging over the recent years, triggered by new manufacturing possibilities and a better understanding of the mechanisms involved in aerodynamic noise generation, propagation through duct systems, and transmission through flexible structures. Some of the most promising mitigation technologies will be addressed in a series of lectures given by international experts in their field, who will explain the rationale behind those technologies starting from first principles, together with the technological challenges to overcome towards their implementation in the final applications. The lectures will be punctuated with practical examples of applications relevant to various fields including ducted systems, rotating machineries (ventilation systems, wind turbines and aeroengines), or lightweight low-transmission panels. The course will conclude with a live demonstration of some technologies on a dedicated didactic test bench developed in the framework of the H2020 MSCA project SmartAnswer.
The Director of this lecture series is Professor Christophe Schram of the von Karman Institute.
There are 3 days lecture series and 1 day for the EU consortium.
8:45 Welcome word
9:00 -10:15 Noise generation, propagation and transmission mechanisms
Christophe Schram, von Karman Institute for Fluid Dynamics, Belgium and Christel Claeys, KU Leuven, Belgium
10:45-12:00 Airfoil noise and its reduction with leading and trailing edge serrations
Michel Roger, Ecole Centrale de Lyon, France
14:00-15:15 Aeroacoustic mitigation through shape optimization
Kyriakos Giannakoglou, National Technical University Athens, Greece
15:45-17:00 Porous materials for the damping of turbulence-airfoil interaction and
Christophe Schram, von Karman Institute for Fluid Dynamics, Belgium and Daniele Ragni, TU Delft, Belgium
9:00 -10:15 Introduction to electro-acoustics
Hervé Lissek, École Polytechnique Fédérale de Lausanne, Switzerland
10:45-12:00 Passive and active acoustic liners
Yves Aurégan, Université du Maine, France and Manuel Collet, École Centrale de Lyon, France
14:00-15:15 Acoustic and structural metamaterials
Yves Aurégan, Université du Maine, France and Christel Claeys, KU Leuven, Belgium
15:45-17:00 Simulations of in-duct attenuation with advanced liner technologies
Hadrien Bériot, Siemens Industry Software, Belgium
9:00 -10:15 Rotating machine noise reduction with serrations, conventional and over-the-tip liners
Michel Roger, Ecole Centrale de Lyon, France; Manuel Henner, Valeo, France; Alain Guédel, CETIAT, France; Brian Tester, U. Southampton, United Kingdom
10:45-12:00 Wind turbine flow and noise control with VGs and TE serrations
Pawel Flaszynski, IMP-PAN, Poland; Stefan Oerlemans, Siemens-Gamesa, Spain; Daniele Ragni, TU Delft, Belgium
14:00-15:15 Development of a didactic technological demonstrator
Christophe Schram, von Karman Institute for Fluid Dynamics, Belgium / Early Stage Researchers
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