SmartAnswer

Smart mitigation of flow-induced acoustic radiation and transmission for reduced aircraft, surface transport, workplaces and wind energy noise

ESR 1: Investigation of turbulence-surface interaction noise mechanisms and their reduction using porous materials

ESR1

Objectives: Investigate theoretically, experimentally and numerically the LE turbulence distortion effects in presence of porous materials; correlate the source and far-field noise for a rod-airfoil case and predict the potential benefits for airframe devices.

Expected Results: New insight and physical models for the attenuation of turbulence-surface interaction noise, accounting for viscous losses and turbulence distortion; assessment of the potential of this technology for airframe high-lift devices and ventilation systems.

Planned secondments: KTH, Profs. Abom and Bodén, at M18 for 2 months: measurement/modelling of micro-perfs; UdeS, Prof. Moreau, at M24 for 1 month: investigation of porous materials; TUD, Dr. Ragni, at M30 for 1 month: PIV measurements of rod-airfoil configuration; CETIAT, Dr. Guédel, at M36 for 2 weeks: applicability to building HVAC systems.

Riccardo Zamponi

Riccardo Zamponi

Italy

2017 - Master’s Degree in Mechanical Engineering at Università Politecnica delle Marche, Italy, with a thesis carried out at the von Karman Institute for Fluid Dynamics, in Brussels, Belgium

2014 – Bachelor’s Degree in Mechanical Engineering at Università Politecnica delle Marche, Italy

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 2: Flow and acoustic control for automotive low-speed cooling fans

ESR2Flow and acoustic control for automotive low-speed cooling fans

 

 

Objectives: Investigate experimentally, theoretically and numerically the performance of micro-perforate liners for acoustic vs. hydrodynamic absorption; develop a fast prediction method to predict the noise of a low-speed cooling fan including mitigation technologies.

Expected Results: Physical models and design guidelines for the hydrodynamic and acoustic absorptions in low-speed fan systems; low-order prediction model for industrial pre-design stage.

Planned secondments: VAL, Dr. Henner, at M15 for 2 weeks: acquiring baseline knowledge about automotive low-speed cooling fans; KTH, Profs. Bodén and Abom, at M24 for 2 months: measurement/modelling of micro-perfs; PSA, Dr. van Herpe, at month 36 for 2 weeks: automotive integration aspects; CETIAT, Dr. Guédel, at month 38 for 2 weeks: applicability to building HVAC.

 

 

Alessandro Zarri

Alessandro Zarri

Italy

2017 - Master’s Degree in Aerospace Engineering at Politecnico di Torino, Italy, with a thesis carried out at the University of Southampton, UK.

2014 - Bachelor’s Degree in Aerospace Engineering at Politecnico di Torino, Italy

This email address is being protected from spambots. You need JavaScript enabled to view it.

 

 

 

ESR 3: Effect of high level acoustic excitation and combinations of grazing/bias flow (“complex loads”) on micro-perforate impedance

ESR3

Objectives: Experimental investigations using advanced acoustic and optical measurement techniques, to upgrade theoretical / numerical models; analyse the data using SI techniques.

Expected Results: Methods to analyse non-linear impedance; validated models for micro-perforate impedance under “complex loads”; input to design optimization for micro-perforated sheets; new databases of acoustic properties of micro-perforates under complex loads.

Planned secondments: TUD, Prof. Scarano, at M18 for 1 month: PIV training; DLR, Dr. Herr, at M27 for 1 month: liner testing training; TNF, Mr. Caule, at M36 for 2 weeks: aeronautical applications aspects; VW, Dr. Hartmann, at M38 for 2 weeks: automotive applications.

Niloofar Sayyad Khodashenas

Niloofar Sayyad Khodashenas

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 4: Flow-acoustic interaction with innovative materials

ESR4

Objectives: Study flow-acoustic interactions with metamaterials and compliant MEMS surfaces with grazing flow; analytical analyses, high fidelity numerical simulations as well as high-resolution experimental techniques applied to generic and industrial cases.

Expected Results: Model of the physical mechanisms responsible for the coupling between flow and materials; guidelines to materials manufacturers and to numerical software developers.

Planned secondments: SNT, Mr. Corin, at M15 for 2 weeks: to learn about micro-perforates; KTH, Profs. Bodén and Abom, at M18 for 1 month: to compare metamaterials with micro-perfs; EPFL, Dr. Lissek, at M30 for 1 month: to compare active and passive compliant materials; SISW, Dr. Bériot, at M40 for 1 month: to transfer knowledge to code manufacturer.

Massimo Emiliano d'Elia

Massimo Emiliano d'Elia

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 5: Active MDOF resonators for acoustic liners

ESR5

Objectives: Develop an ad hoc numerical platform that accounts for both the acoustic field with flow and the electromechanical coupling in active MDOF resonators; numerical simulations and experiments applied to a generic structure and to a generic fuselage demonstrator.

Expected Results: Better understanding and modelling of active MDOF liner in presence of flow; development and assessment of an active MDOF liner prototype for aircraft engines applications.

Planned secondments: SISW, Dr. Bériot, at M15 for 1 month: to upgrade the numerical simulation platform; ECL, Dr. Collet, at M21 for 3 months: to aggregate the numerical models developed by ECL and EPFL; LAUM/CNRS, Profs. Aurégan, at M33 for 1 month: to identify potential MEMS candidate; ADE, Dr. Scheel, at M39 for 3 months: application to full-scale generic fuselage demonstrator.

Thomas Laurence

Thomas Laurence

France

2017 : Engineer’s degree at Supélec,Gif-Sur-Yvette, France

Between 2012 and 2017 : Diverse research projects at EPFL, Laboratoire d’Acoustique de l’Université du Maine, Active Audio…

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 6: Separation and wake noise reduction by means of streamwise vortex generators

ESR6

Objectives: Identify the noise sources in the flow field and their attenuation with streamwise vortex generators; application to generic airfoils and wind turbine blade.

Expected Results: Numerical investigations of jet VGs and rod VGs by means of RANS-LES for wind turbine profile without/with streamwise vortex generators; validation with experimental data.

Planned secondments: SWP, Dr. Oerlemans, at M20 for 1 month: to assess the applicability to full-scale wind turbine blades; TUD, Prof. Scarano, at M28 for 2 months: to measure source field alteration and validate simulations; VKI, Prof. Schram, at M32 for 2 months: to predict the sound reduction.

Thanushree Suresh

Thanushree Suresh

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 7: Trailing edge noise reduction by porous materials

ESR7

Objectives: This project entails the characterization of the properties of metal-foam and the validation of metal-foam modelling in computational studies. This will be followed by studies to discover its potential in reducing rotor-stator interaction noise, primarily in turbofan.

Expected Results: Better understanding on the effect of metal-foam characteristics (e.g., resistivity and porosity) to noise reduction leading to optimization potential. This knowledge would also improve prediction capabilities of future numerical techniques. Noise reduction of > 2 dB is expected at the frequency range of interest when metal-foam is applied on turbofan’s outlet guide vane (OGVs).

Planned secondments: TBA

Christopher Teruna

Christopher Teruna

Indonesia

At present, he is a doctoral candidate within the Aeroacoustics research group of the Faculty of Aerospace Engineering, Delft University of Technology in the Netherlands. He completed his undergraduate study, majoring in aerospace Engineering, at Bandung Institute of Technology, Indonesia (2014). Afterward, he completed his M.S. in Aerospace Engineering from Korea Advanced Institute of Science and Technology, South Korea (2017). His current research interest is in aeroacoustics of turbulence impingement noise (TIN).

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 8: Novel experimental diagnostics for the reduction of turbulence-body interaction noise

ESR8

Objectives: Contribute to the development of tomographic PIV based pressure reconstruction for the investigation of turbulence-body interaction noise; investigate experimentally the reduction of airfoil noise by trailing-edge serrations; extrapolation to full scale WT blades.

Expected Results: Reference NACA0018 airfoil data with embedded microphones at TE location; WT airfoil data with Reynolds of about 1,000,000; extrapolation to full-scale.

Planned secondments: DLR, Dr. Herr, at M30 for 1 month: testing and prediction on WT blades.

Javed Mohd

Javed Mohd

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 9: Over-the-tip liners for fans

ESR9

Objectives: Develop prediction models for the source attenuation due to over-the-tip acoustic treatments for fan noise; provide a quantitative estimate of the benefits in generic and industrial cases.

Expected Results: Guide the choice of low-TRL liner technologies that provides the optimal acoustic absorption and meet the installation constraints (volume, weight, etc); simple theoretical models and detailed numerical simulations, validated by comparison with data obtained on the TNF rig at ECL.

Planned secondments: ECL, Prof. Roger, at M19 for 2 months: to study applicability to TNF turbomachine; SISW, Dr. Bériot, at M36 for 1 month: to run acoustic simulations of over-the-tip liners; TNO, Dr. Golliard, at M39 for 2 weeks: applicability to high-pressure turbo-compressors.

Sergi Pallegà Cabré

Sergi Pallegà Cabré

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 10: Development of intelligent lightweight material solutions for improved vibro-acoustic transmission problems

ESR10

Objectives: Investigation of novel materials and development of innovative structures using virtual design tools; physical prototyping applied to rectangular channel and generic fuselage demonstrator.

Expected Results: Innovative material solutions for noise and vibration isolation; real life demonstration of potential under realistic conditions (loads and boundary conditions).

Planned secondments: CNRS/LAUM, Profs. Auregan and Dazel, at M15 for 3 months: fundamental studies on metamaterials; SISW, Dr. Beriot, at M24 for 1 months: test industrial CAE tools for virtual design; VW, Dr. Hartmann, at M34 for 2 months: to benchmark solutions with industrial automotive requirements; ADE, Dr. Scheel, at M39 for 3 months: application to generic fuselage demonstrator.

Felipe Alves Pires

Felipe Alves Pires

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 11: Reduction of broadband aerodynamic noise of airfoils by geometrical and structural modifications

ESR11

Objectives: Assess experimentally and through empirical/analytical models the potential reductions of the turbulence-impingement noise by a wavy LE, a rigid-porous structure and a compliant wall; assess the techniques on a car-engine cooling fan.

Expected Results: Improved understanding of the physics of turbulence-impingement noise around leading edges and of the effect of material or geometrical modifications; analytical models for turbulence-impingement noise predictions;demonstration in low-speed cooling fan systems.

Planned secondments: TUD, Dr. Ragni, at M18 for 1 month: PIV measurements of turbulence-airfoil interaction; VAL, Dr. Henner, at M22 for 1 month: to gain knowledge on car-engine cooling fans and study of wavy leading edges; NTUA, Prof. Giannakoglou, at M30 for 2 months: to perform optimization studies; CETIAT, Dr. Guédel, at M38 for 1 month: assess potential for building HVAC.

Georgios Bampanis

Georgios Bampanis

Athens, Greece

2015 - Master's Degree in Computational Mechanics, NTUA

2015 - Acoustic Consultant at Acoustic Science company, Greece

2013 - Diploma Degree in Mechanical Engineering (MSc equivalent) at National Technical University of Athens

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 12: Acoustic transmission mitigation by architected nonlinear materials presenting negative behaviours

ESR12

Objectives: Evaluation of architected nonlinear and architected materials for acoustic broadband emission-transmission mitigation; realize prototypes to evaluate materials performances, process complexity and robustness; validation on ADE generic fuselage demonstrator.

Expected Results: Innovative architected nonlinear material samples; demonstration of structural noise transmission reduction; design methodologies; integrated innovative sound package.

Planned secondments: EPFL, Dr. Lissek, around M24 for 3 months: nonlinear shunts on micro loudspeakers network; KUL, Prof. Desmet, at M32 for 3 months: to test solution on KUL application case; ADE, Dr. Scheel, at M39 for 3 months: application to generic fuselage demonstrator.

Emanuele de Bono

Emanuele de Bono

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 13: CFD-CAA analysis & optimization methods, with industrial applications

ESR13

Objectives: Development of a CAA tool and coupling with a GPU-enabled compressible CFD solver; development of the (continuous) adjoint to the coupled CFD-CAA model; testing and validation in small-medium scale cases; adaptation of non-intrusive polynomial chaos approach for UQ in CFD-CAA problems; application to VW automotive benchmark.

Expected Results: New optimization approach based on the (continuous) adjoint to the coupled CFD-CAA tool; new UQ analysis based on polynomial chaos for direct CFD-CAA problems; CFD/CAA benchmark databases for aircraft/automotive applications.

Planned secondments: VKI, Prof. Schram, at M15 for 1 months: to get familiar with noise generation and attenuation processes; SISW, Dr. Bériot, at M16 for 2 months: to learn commercial CAA methods for aeroacoustics; VW, Dr. Hartmann, at M27 for 2 months: to get familiar with the processes used by the automotive industry to numerically simulate noise generation and propagation.

Morteza Monfaredi

Morteza Monfaredi

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 14: Efficient numerical modelling of advanced liners

ESR14

Objectives: Extend non-overlapping domain decomposition methods to non-local liners; apply the newly developed method to simple case at CNRS/LAUM and to the TNF rig at ECL.

Expected Results: New numerical models with drastically lower CPU costs compared to current state-of-the-art; validation databases.

Planned secondments: SOTON/ISVR, Dr. Gabard, at M18 for 3 months: modelling of liners with mean flow; CNRS/LAUM, Prof. Aurégan, at M24 for 3 months: to simulate new liner designs; KUL, Prof. Desmet, at M30 for 1 month: to model low-transmission material; TNF, Mr. Caule, at M36 for 2 months: to investigate the potential of the new approach in an industrial optimization design process.

Chaitanya Sanghavi

Chaitanya Sanghavi

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 15: Novel experimental diagnostics for the reduction of turbulence-body interaction noise

ESR15

Objectives: To pursue at SWP the work initiated as ESR8 at TUD; investigate experimentally the reduction of airfoil noise by TE serrations and extrapolate the results towards full-scale WT.

Expected Results: Quantitative estimation of the acoustic impact reduction for a production WT; psycho-acoustic evaluation of the baseline vs. optimized WT.

Planned secondments: VKI, Prof. Schram, at M38 for 1 month: prediction of full rotor noise w/ and w/out serrations; EPFL, Dr. Lissek, at M40 for 2 weeks: psycho-acoustic studies of the SWP wind turbine (subject to IPR restrictions, hence a separate campaign) in the EPFL listening test chamber.

Javed Mohd

Javed Mohd

This email address is being protected from spambots. You need JavaScript enabled to view it.

ESR 16: Reduction of the broadband noise of centrifugal fans used on HVAC in buildings

ESR16

Objectives: Experimental investigation of blade trailing-edge and leading-edge serrations, porous materials and wavy surfaces; assess acoustic and aerodynamic effects; perform RANS simulations to get an insight of the flow pattern; assess the potential for CFD-driven optimization in collaboration with NTUA.

Expected Results: First assessment of novel flow and acoustic control approaches for low-speed centrifugal fans; experimental and numerical databases.

Planned secondments: VAL, Dr. M. Henner, at month 15 for 2 weeks: to learn about automotive low-speed axial cooling fans; ECL, Prof. M. Roger, at month 17 for 1 month: to learn modelling approaches for low-speed axial fans; NTUA, Dr. K. Giannakoglou, at month 36 for 2 months, to evaluate the possibility of optimization of the most promising flow and acoustic control approaches.

Ignacio Zurbano Fernández

Ignacio Zurbano Fernández

2015-2017 Integration engineer at CERN, Switzerland

2015 Bachelor+Master in Mechanical Engineering at Universidad de Oviedo, Spain, with a thesis carried out at Arts et Métiers Paris Tech, France

This email address is being protected from spambots. You need JavaScript enabled to view it.