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Advanced concepts for the reduction of flow-induced noise generation, propagation and transmission

Date: Nov. 23, 2020 - Nov. 26, 2020
Location: Online
Contact: secretariat@vki.ac.be
Phone: +3223599604

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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.

Monday 23 November 2020

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

10:15-10:45 Break

10:45-12:00 Airfoil noise and its reduction with leading and trailing edge serrations
Michel Roger, Ecole Centrale de Lyon, France

12:00-14:00 Lunch

14:00-15:15 Aeroacoustic mitigation through shape optimization
Kyriakos Giannakoglou, National Technical University Athens, Greece

15:15-15:45 Break

15:45-17:00 Porous materials for the damping of turbulence-airfoil interaction and
self- noise
Christophe Schram, von Karman Institute for Fluid Dynamics, Belgium and Daniele Ragni, TU Delft, Belgium

Tuesday 24 November 2020

9:00 -10:15 Introduction to electro-acoustics
Hervé Lissek, École Polytechnique Fédérale de Lausanne, Switzerland

10:15-10:45 Break

10:45-12:00 Passive and active acoustic liners
Yves Aurégan, Université du Maine, France and Manuel Collet, École Centrale de Lyon, France

12:00-14:00 Lunch

14:00-15:15 Acoustic and structural metamaterials
Yves Aurégan, Université du Maine, France and Christel Claeys, KU Leuven, Belgium

15:15-15:45 Break

15:45-17:00 Simulations of in-duct attenuation with advanced liner technologies
Hadrien Bériot, Siemens Industry Software, Belgium

Wednesday 25 November 2020

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

10:15-10:45 Break

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

12:00-14:00 Lunch

14:00-15:15 Development of a didactic technological demonstrator
Christophe Schram, von Karman Institute for Fluid Dynamics, Belgium  / Early Stage Researchers

15:15-15:45 Break

15:45-17:00 Closure

Thursday 26 November 2020 9:00-17:00 - SmartAnswer Workshop

  • Recapitulation on the main results of the project
  • Industrial perspectives for the new technologies
  • Feedback from Advisory Board
  • Recommendations for future research and development

The citizens of the following countries are eligible to attend the von Karman Institute Lecture Series:

- EU member countries
- NATO member countries
- NATO's Mediterranean Dialogue (Algeria, Egypt, Israel, Jordan, Mauritania, Morocco, Tunisia)
- Istanbul Cooperation Initiative (Bahrain, Kuwait, Qatar, United Arab Emirates)
- Argentina, Australia, Bolivia, Brazil, Cabo Verde, Cameroon, Chile, Colombia, Japan, India, Indonesia, Macedonia, Malaysia, Mauritania, Mexico, Montenegro, Mozambique, New Zealand, Nigeria, Republic of Korea, Saudi Arabia, Serbia, Singapore, South Africa, Switzerland, Thailand, Uruguay, South-Africa and Vietnam.

VKI reserves the right to request a clearance check with Belgian authorities.

The participants will have to present their ID card (for EU citizens) or passport (for other citizens) the first day of the lecture series.

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  • Status Fee
    ERM / Special Reg/ Lecturer Free
    Undergraduate Student 225€
    PhD / Students 600€
    Recognized Universities / Resarch Center 1200€
    Commercial organizations 3000€

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    Advanced concepts for the reduction of flow-induced noise generation, propagation and transmission

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