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Event 13: Computational Aeroacoustics

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Aeroacoustics is a fast evolving subject, implied in fields as various as transport (airplane and road vehicles) or safety (noise in working environment, vibration-induced mechanical fatigue) for example. This course is aimed at providing a state of the art in noise prediction, in a form accessible to both researchers and industrial attendees. The emphasis will be put on recent theoretical and numerical developments, characterized by different levels of approximation: 1. direct methods for CAA based on Direct Numerical Simulation (DNS), Large Eddy Simulation (LES) and Detached Eddy Simulation (DES); 2. URANS solution of the Navier-Stokes equations; 3. Hybrid methods based on CFD for sound production combined with linearized methods for far field sound radiation (Lighthill and Ffowcs-Williams analogies, Kirchhoff integral method, ...). These methods will be applied to test cases (like jet noise, rotor noise, ...), and compared with experimental results. The test cases considered are chosen to illustrate the abilities of the different approaches, allowing an evaluation of their performances and applicability, but without being restricted to any particular field. Therefore, the main objective of this course is to allow a large transfer between world scientists, leaders in the aeroacoustics field, and demanding industry and laboratories in research centers and universities.

Program and Time table

Monday 24 April
09:15 Welcome address by Prof. M. Carbonaro, VKI Director
09:30 Fundamentals of Aeroacoustics by Prof. M. Roger, Ecole Centrale de Lyon, France
11:15 Fundamentals of Aeroacoustics (con't) by Prof. M. Roger
14:00 Vortex Sound Theory by Dr. C. Schram, LMS International, Belgium
15:45 Overview of CAA by Prof. T. Colonius, California Institute of Technology, USA

Tuesday 25 April
09:00 Numerical methods I by Prof. T. Colonius
11:45 Numerical methods II by Prof. T. Colonius
14:00 Hybrid methods and statistical source models by Prof. W. Schröder, Rheinisch-Westfälische Technische Hochschule Aachen, Germany
15:45 Application of hybrid methods by Prof. W. Schröder

Wednesday 26 April
09:00 CAA for flow/acoustic interaction and high speed flows with shocks by Prof. S. Pirozzoli, University of Rome, Italy
10:45 Shock vortex and shock turbulence interaction by Prof. S. Pirozzoli
14:00 Aeroacoustic computation using LES and acoustic analogy: I. Methodology and some important issues by Prof. M. Wang, University of Notre Dame, USA
15:45 Visit of the VKI laboratories

Thursday 27 April
09:00 Aeroacoustic computation using LES and acoustic analogy: II. Application to trailing-edge noise by Prof. M. Wang
10:45 Interfacing a Boundary Element Method with low-order CFD by Dr. C. Schram
14:00 Automotive Examples by Dr. C. Schram
15:45 Generation of unsteady aeroacoustic sources from steady CFD by Dr. J. Golliard, TNO Industry & Technology, The Netherlands

Friday 28 April
09:00 Going further with the hybrid method: input for industry-standard methods by Dr. J. Golliard
10:45 Turbomachinery Noise by Prof. M. Roger
14:00 Noise from Open Rotors and Wind Turbines by Prof. M. Roger
15:30 Departure of VKI bus

Fellowships
A limited number of fellowships are available for young researchers (PhD candidates and Post-Doc). The details of the grant are as follows:
- cancellation of the regular VKI registration fee (normally 450€)
- additional grant to cover “acceptable costs”.

The additional grant will not be fixed but based on real costs. Acceptable costs are only reimbursed based on receipts. Try to reduce the expenses as much as possible. In this way a maximum number of students will be able to profit from the grants.

Acceptable costs are split in:
- travel costs (max. 220€)
- accommodation costs (max. 300€)
- boarding costs (100€)
Acceptable travel costs are: only airplane (economy at most) and/or train tickets. No taxi, personal car, metro, nor city bus transportation costs can be accepted.
Acceptable accommodation costs are: youth hostel (strongly recommended) or hotel, including breakfast for maximum 5 days. You could reduce the cost by sharing the hotel room with colleague student from the same university. A list of recommended accommodation is available on the VKI web site http://www.vki.ac.be/eua4x/.
The boarding expenses (100€) will be advanced by the VKI to cover the hot lunch together with regular participants and lecturers.

To apply for a fellowship, you are requested to submit to the VKI secretariat (secretariat@vki.ac.be) the completed application form available on http://www.vki.ac.be/eua4x/
When
2006-04-24 09:00 to
2006-04-28 15:30
Deadlines
Intial deadline: February 28, 2006. First notification: March 6, 2006. EXTENDED deadline for applications: March 31, 2006. The new applications will be reviewed in the order they are received by VKI, and depending on the remaining budget.
Where
VKI, Brussels, Belgium
Contact
Jerome Anthoine, Herman Deconinck
Contact Email
secretariat@vki.ac.be
Contact Phone
+32-2-359 96 15

For more information, visit
http://www.vki.ac.be/eua4x

 

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