Conference Agenda

Session
A33_01: Acoustics, Acoustics of Turbulent Flows
Time:
Monday, 16/September/2024:
3:30pm - 6:00pm

Session Chair: Matthias Meinke, RWTH Aachen University
Location: S01

C.A.R.L.-Central Auditorium for Research and Learning Claßenstr. 11 52072 Aachen

Presentations
3:30pm - 3:45pm

Determination of the acoustic transmission behaviour of pipe sections with local cavitation bubbles in water

Patrick S. Hartwich, Andreas Brümmer

TU Dortmund University, Chair of Fluidics

Hartwich-Determination of the acoustic transmission behaviour-647.pdf


3:45pm - 4:00pm

Validation of a Semi-Empirical Wind Turbine Noise Prediction Tool (YSA)

Andrés V. Gimeno-Garcia1, Paul Piechnick2, Wolfgang Schröder1

1RWTH Aachen University, Chair of Fluid Mechanics and Institute of Aerodynamics; 2RWTH Aachen University, Chair and Institute of Automatic Control

Gimeno-Garcia-Validation of a Semi-Empirical Wind Turbine Noise Prediction Tool-668.pdf


4:00pm - 4:15pm

Acoustic Emission of Thermodiffusive Unstable Premixed Lean Hydrogen-Air Slit Flames

Borja Pedro Beltran1, Matthias Meinke1, Wolfgang Schröder1,2

1RWTH Aachen University, Chair of Fluid Mechanics and Institute of Aerodynamics, Wüllnerstrasse 5a, 52062 Aachen, Germany; 2JARA Center for Simulation and Data Science, RWTH Aachen University, Seffenter Weg 23, 52074 Aachen, Germany

Pedro Beltran-Acoustic Emission of Thermodiffusive Unstable Premixed Lean Hydrogen-Air Slit-258.pdf


4:15pm - 4:30pm

Numerical analysis of landing gear noise control by porous fairings

Miro Gondrum1, Matthias Meinke1,2, Wolfgang Schröder1,2

1Chair of Fluid Mechanics and Institute of Aerodynamics, RWTH Aachen University, Wüllnerstrasse 5a, 52062 Aachen, Germany; 2JARA - Center for Simulation and Data Science, RWTH Aachen University, Kopernikusstrasse 6, 52074 Aachen, Germany

Gondrum-Numerical analysis of landing gear noise control by porous fairings-570.pdf


4:30pm - 4:45pm

The effect of acoustic liners with cooling bias flow on the high order acoustic modes in a cylindrical duct

Yifan Hu, Dong Yang

Southern University of Science and Technology

Hu-The effect of acoustic liners with cooling bias flow-351.pdf


4:45pm - 5:00pm

BTGNX - A systematic experimental and numerical study of tip-gap noise

Lev Liberson, Fabian Reuschling, Roland Ewert, Michael Pott-Pollenske, Jan Delfs

DLR Institute for Aerodynamics and Flow Technology, Dept. of Technical Acoustics, Germany

Liberson-BTGNX - A systematic experimental and numerical study-1395.pdf


5:00pm - 5:15pm

Direct lattice Boltzmann computation of high-lift noise with and without noise reduction technologies applied

Malav Soni, Roland Ewert, Jan Delfs

Deutsches Zentrum für Luft- und Raumfahrt (DLR e.V.)

Soni-Direct lattice Boltzmann computation of high-lift noise with and without noise-841.pdf


5:15pm - 5:30pm

Frequency analysis and space-time correlations of hydroacoustic noise beneath an impinging round wall jet boundary layer

Jonathan B. Stocking, Roger M. Oba

US Naval Research Laboratory, Acoustics Division (Code 7160), 4555 Overlook Ave SW, Washington DC, 20375 USA

Stocking-Frequency analysis and space-time correlations of hydroacoustic noise beneath an-794.pdf


5:30pm - 5:45pm

Impact of Turbulent Inflow on Acoustics of a Propeller Operating at Low Reynolds Number

Mario Alì1, Andrea Piccolo2, Riccardo Zamponi2, Daniele Ragni2, Francesco Avallone1

1Politecnico di Torino, DIMEAS, Corso Duca degli Abruzzi 24, 10122, Torino; 2Delft University of Technology, FPT Department, Kluyverwerg 1, 2629HS, Delft, The Netherlands

Alì-Impact of Turbulent Inflow on Acoustics of a Propeller Operating-807.pdf


5:45pm - 6:00pm

Resolvent analysis of airfoil noise

Antoine Jouin1, Christopher Douglas2, Benjamin Cotté1, Lutz Lesshafft3

1ENSTA Paris, Institute of Mechanical Sciences and Industrial Applications; 2MIT Energy Initiative, Massachusetts Institute of Technology; 3LadHyX, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris

Jouin-Resolvent analysis of airfoil noise-1187.pdf