von Karman Institute Lecture Series and Events

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

Monday 23 November 2020 - Thursday 26 November 2020

VKI secretariat, This email address is being protected from spambots. You need JavaScript enabled to view it.; Phone: +32 2 359 96 04


This Online 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.

An online workshop on the H2020 project "SmartAnswer:Smart mitigation of flow-induced acoustic radiation and transmission for reduced aircraft, surface transport, workplaces and wind energy noise" is organized on Thursday 26 November from 9:00 to 17:00. This workshop is free and open to the public. If you are not registred to the lecture series itself, there is a specific registration for the workshop only. For the participants to the lecture series, it is not needed to register to the workshop.



Programme (3 days lecture series  and 1 day workshop)

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 Lucas Van Belle, 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, The Netherlands

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 Lucas Van Belle, 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

9:00 – 9:15 Welcome

9:15 – 9:30 Overview of the SmartAnswer project
C. Schram & J. Christophe, von Karman Institute for Fluid Dynamics, Belgium

9:30 – 10:45 Aerodynamic noise reduction with flow control devices and their industrial perspectives
R. Zamponi , T. Suresh, C. Teruna , L. T. Lima Pereira, G. Bampanis, I. Zurbano Fernández

10:45 – 11:00 Coffee break

11:00 – 12:15 Acoustic control with new material technologies and their industrial perspectives
N. S. Khodashenas , M. D’Elia, F. A. Pires, E. De Bono

12:15 – 13:30 Lunch

13:30 – 14:45 Modeling techniques for noise reduction technologies and their industrial maturity
M. Monfaredi, S. Palleja, C. Sanghavi, A. Zarri

14:45 – 15:15 Feedback from the advisory board

15:15 – 15:45 Wrap-up and Recommendations for the future research and development

Friday 27 November 2020 9:00-17:00 - Consortium meeting (only for consortium members)

9:15 – 9:30 Welcome
9:30 – 10:30 SmartAnswer consortium meeting – remaining tasks for project closure.
J. Christophe & C. Schram
10:30 – 11:00 Open discussions.

Eligibility Criteria

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.

Fee and Registration

Early bird registration fee (until November 7, 2020 included)

Price for citizens of NATO countries funding VKI

Belgium, Bulgaria, Czech Republic, France, Germany, Greece, Hungary, Iceland, Italy, Luxemburg, Norway, Portugal, Romania, Turkey and the United States

  Early registration Late registration
Undergraduate students 141.75 157.5
PhD students  378 420
Staff from recognized universities / research center 756 840
Staff from commercial organizations 1890 2100


Price for citizens of other countries

  Early registration Late registration
Undergraduate students 202.5 225
PhD students  540 600
Staff from recognized universities / research center 1080 1200
Staff from commercial organizations 2700 3000

Information for PhD candidates and undergraduate students: To obtain the reduced price, the applicant must provide a recommendation letter from his or her professor; if not, the request will not be taken into consideration.




Special reduction

Rebates can be given for group subscriptions along the following scheme :

- 5 persons of the same organization -2%
- 10 persons of the same organization -5%
- 20 persons of the same organization -10%

Location : von Karman Institute for Fluid Dynamics, Waterloosesteenweg 72, B-1640 Sint-Genesius-Rode