ESR 1: Investigation of turbulence-surface interaction noise mechanisms and their reduction using porous materials
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.
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
ESR 2: Flow and acoustic control for automotive low-speed cooling fansFlow 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.
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
ESR 3: Effect of high level acoustic excitation and combinations of grazing/bias flow (“complex loads”) on micro-perforate impedance
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
ESR 4: Flow-acoustic interaction with innovative materials
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
ESR 5: Active MDOF resonators for acoustic liners
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.
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…
ESR 6: Separation and wake noise reduction by means of streamwise vortex generators
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.
ESR 7: Trailing edge noise reduction by porous materials
Objectives: Characterize the physical properties of different porous materials; perform acoustic and aerodynamic measurements of wing geometries with and without porous materials.
Expected Results: Choice and optimization of the design to reach a noise reduction larger than 5 dB in a range of frequencies of industrial interest; aerodynamic and acoustic measurements of the impact.
Planned secondments: IMP-PAN, Prof. Flaszyński, at M24 for 1 month: to compare porous materials and VGs; DLR, Dr. Herr, at M30 for 1 month: testing and/or prediction activities on low-noise WT blades; SWP, Dr. Oerlemans, at M36 for 1 month: assess porous TE noise reduction for WTs.
ESR 8: Novel experimental diagnostics for the reduction of turbulence-body interaction noise
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.
ESR 9: Over-the-tip liners for fans
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
ESR 10: Development of intelligent lightweight material solutions for improved vibro-acoustic transmission problems
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
ESR 11: Reduction of broadband aerodynamic noise of airfoils by geometrical and structural modifications
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.
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
ESR 12: Acoustic transmission mitigation by architected nonlinear materials presenting negative behaviours
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
ESR 13: CFD-CAA analysis & optimization methods, with industrial applications
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.
ESR 14: Efficient numerical modelling of advanced liners
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.
ESR 15: Novel experimental diagnostics for the reduction of turbulence-body interaction noise
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.
ESR 16: Reduction of the broadband noise of centrifugal fans used on HVAC in buildings
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
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