12th Symposium of VKI PhD Research 2021
Monday 01 March 2021 - Wednesday 03 March 2021 
Introduction
We are happy to confirm that the online PhD symposium will be organized from Monday 1 March until 3 March 2021. Prominent lecturers in three application fields of fluid dynamics will give a keynote lecture opening each day of the symposium.
During the 12th PhD symposium, the VKI graduate students will review the doctoral research carried out in the three departments of the Institute: Aeronautics and Aerospace, Environmental and Applied Fluid Dynamics, and Turbomachinery and Propulsion.
The first-year PhD students will present a short pitch of maximum 5 minutes on their research plans and some preliminary results. Their posters are available for download on the programme tab.
The second-year students will give a 15-minute talk on their research activities and progress results followed by 5 minutes of questions.
The third-year students will give a 20-minute talk followed by 5 minutes of questions.
The talks are organized in sessions according to the following topics:
-Liquid Metals & Industrial Flows
-Environmental flows & Safety
-Aerodynamics & Aeronautics
-Aeroacoustics
-Liquid & Solid Propulsion
-Aerothermochemistry
-Aerothermodynamics
-Rarefied and plasma flows
-Turbine aerodynamics & heat transfer
-Compressor aerodynamics & heat transfer
-Shape Optimization
-Instrumentation & measurement techniques
Programme
Monday 1 March 2021
Session 1: Aerothermochemistry
Chair: Dr. Bernd Helber, Research Engineer
10:30 - 10:50 Michele CAPRIATI: Heat flux characterization of an under-expanded/supersonic plasma jet over a catalytic probe
10:50 - 11:15 Andrea FAGNANI: Comprehensive characterization of the aero-thermo-mechanical response of space debris materials to atmospheric entry plasmas
11:15 - 11:40 David HENNEAUX: A high-order level-set method to follow the gas-liquid interface of melting materials
11:40 - 12:05 Francisco TORRES HERRADOR: Understanding the graphitization process of carbon fibers
Session 2: Aerothermodynamics
Chair: Dr. Alessandro Turchi, Research Engineer
12:05 - 12:30 Firas BEN AMEUR: Development of high-order adaptative algorithms for simulating magnetic reconnection processes with uncertainty quantification
12:30 - 13:30 Lunch
13:30 - 13:55 Ray VANDENHOECK: Massively parallel and robust high-order methods for transitional hypersonic flow modelling on unstructured grids
13:55 - 14:20 Ali Can ISPIR: Simulation of supersonic mixing of alternative fuels for air-breathing engines based on data mining
14:20 - 14:45 Vincent GIANGASPERO Modeling strategy for blackout analysis of re-entry phases in space exploration missions
14:45 - 15:05 Louis REBOUL: Multi-fluid simulations of instabilities and sheaths in low-temperature low-pressure magnetized plasmas: advanced numerical methods and comparison with pic.
15:05 - 15:35 Coffee Break
Session 3: Rarefied and Plasma Flows
Chair: Dr. Damien Le Quang, Research Engineer
15:35 - 16:00 Maxim VAN CAPPELLEN: The intercardinal Lagrangian-Eulerian scheme: solving kinetic equations with quadrature-based moment methods fast, accurate and realizable
Session 4: Aeroacoustics
Chair: Dr. Julien Christophe, Research Engineer
16:00 - 16:25 Joachim DOMINIQUE: A wall pressure fluctuations model beneath turbulent boundary layer using artificial neural network
16:25 - 16:50 Kartik VENKATRAMAN: Numerical investigation of vertical axis wind turbine noise under uniform flow conditions
16:40 - 17:15 Break
17:15 - 18:15 Keynote lecture of Graham V. Candler, McKnight Presidential Chair, Distinguished McKnight University Professor, Russell J. Penrose Professor, Associate Department Head, Aerospace Engineering & Mechanics, University of Minnesota, USA
Simulation of Hypersonic Transition and High-Speed Turbulence with CFD
Abstract: The Boundary Layer Transition (BOLT) sounding rocket flight experiment will be launched in June of 2021. BOLT is designed to make detailed measurements of the boundary layer state and the onset of transition to turbulence on ascent at about Mach 5 and on descent at Mach 7.5. BOLT has a complex nose geometry, highly swept leading edges and a concave surface, which challenge the validity of conventional boundary layer stability analysis methods. At the University of Minnesota, we have been developing new approaches for predicting instability growth for complex geometry flows. The seminar will discuss results and progress using high-order, low-dissipation numerical methods to perform “quiet” direct numerical simulations of the BOLT flow field. The simulations reveal four different instability mechanisms; these include with a vortical disturbance associated with boundary layer roll-up on the centerline, traveling crossflow due to boundary layer distortion near the leading edge, and a complex multi-mode instability near the trailing edge. Comparisons to the available wind tunnel data will be presented. Recent results that extend the simulations to laminar flow breakdown and transition to turbulence will also be discussed.
Tuesday 2 March 2021
Session 5: Liquid Metal and Industrial Flows
Chair: Dr. Lilla Koloszar, Research Engineer
09:25 - 09:45 David BARREIRO: Modal analysis of the liquid-gas interaction in jet wiping
09:45 - 10:05 Fabio PINO: Prospects in machine learning-based flow control for liquid metal coating
10:35 - 10:55 Matilde FIORE: Thermal turbulence modelling of liquid metal flows via data analysis and machine learning
10:55 - 11:15 Aude LECARDONNEL: Experimental characterization of evaporation heat exchangers using low GWP fluids
Session 6: Environmental Flows & Safety
Chair: Dr. Wim Munters, Research Engineer
11:15 - 11:35 Loreline FAUGIER: Elaboration of numerical and experimental models for airflow in a subway station
11:35 - 11:55 Tom LAURIKS: Application of improved CFD modeling for prediction and mitigation of traffic-related air pollution hotspots in a realistic urban street
11:55 - 12:15:40 Abdelhafidh MOUMEN: On the application of background-oriented Schlieren on the ballistics field
12:15 - 13:15 Lunch
13:15 - 13:40 Baris KALE: ABL simulations with uncertain weather parameters and impacts on WT performance and near-field noise
13:40 - 14:05 Konstantinos VRATSINIS (has been reschedulded in the pitch session)
Session 7: Liquid and Solid Propulsion
Chair: Prof. Miguel Mendez
14:05 - 14:30 Domenico FIORINI:Dynamic contact angle analysis using inverse methods
14:30- 15:30 Break
15:30 - 16:30 Keynote Lecture of Steven L. Brunton, James B. Morrison Endowed Career Development Professor in Mechanical Engineering, Adjunct Associate Professor, Applied Mathematics, University of Washington, USA
Machine learning for Fluid Mechanics
Abstract: Many tasks in fluid mechanics, such as design optimization and control, are challenging because fluids are nonlinear and exhibit a large range of scales in both space and time. This range of scales necessitates exceedingly high-dimensional measurements and computational discretization to resolve all relevant features, resulting in vast data sets and time-intensive computations. Indeed, fluid dynamics is one of the original big data fields, and many high-performance computing architectures, experimental measurement techniques, and advanced data processing and visualization algorithms were driven by decades of research in fluid mechanics. Machine learning constitutes a growing set of powerful techniques to extract patterns and build models from this data, complementing the existing theoretical, numerical, and experimental efforts in fluid mechanics. In this talk, we will explore current goals and opportunities for machine learning in fluid mechanics, and we will highlight a number of recent technical advances. Because fluid dynamics is central to transportation, health, and defense systems, we will emphasize the importance of machine learning solutions that are interpretable, explainable, generalizable, and that respect known physics.
Wednesday 3 March 2021
09:00 - 10:00 Keynote Lecture of Frank Eulitz, Professor and Head of the Turbomachinery and Propulsion Department, von Karman Institute for Fluid Dynamics, Belgium
Turbomachinery Power for Decarbonization - Trends and Perspectives
Abstract: The largest proportion of the world-wide energy conversion is achieved through use of turbomachinery. Be it for aircraft propulsion, for land based power generation, or for diverse applications in the process industry, whether for cooling, heating, compression or expansion of gases. With the increase of volatile, renewable energy and the goals to achieve carbon-neutrality by 2050, markets and industry branches including the turbomachinery OEM's are undergoing profound transformation. The process of transformation has already started several years ago and is expected to last for decades. The seminar will shed some light on the changing boundary conditions, market and technology trends and challenges. What will be the role of turbomachinery in 2030 and eventually by 2050, ideally in a carbon-neutral world? The future can not be predicted, however, there are observable trends and principles (such as the security of energy supply) that allow to make some projection. The seminar will be based on recent work in technology and business development during my former roles in Industry.
10:00 - 10:30 Coffee Break
Session 8: Shape Optimization
Chair: Dr. Bayindir Saracoglu, Research Manager
10:55 - 11:20 Tom DE BRUYN: Aero-elastic tailoring of composite turbomachinery blades through gradient-based optimisation: harmonic solvers
11:20 - 11:45 Luca ZAMPINI: Elliptic Mesh Generation for Industrial Shape Optimization
Session 9: Turbine Aerodynamics & Heat Transfer
11:45 - 12:05 Gustavo LOPES: Adaptation of a transonic linear cascade to investigate purge and secondary flow effects on the aerodynamics of high-speed low-pressure turbines
12:05 - 12:25 Mizuki OKADA: PIV measurements of rim seal flows in a high-speed turbine rig
12:25 - 13:25 Lunch
13:25 - 13:45 Antonio Federico TORRE: Experimental investigation of the aerodynamics of a single-stage high-speed low-pressure turbine
Session 10: Compressor Aerodynamics & Heat Transfer
Chair: Prof. Sergio Lavagnoli
13:45 - 14:05 Riccardo TORACCHIO: Steady and unsteady numerical characterization of the stable operating range of a highly-loaded low-pressure compressor stage
14:05 - 14:30 Cedric BABIN: Measurement setup and strategy for shrouded stator cavity flow characterization in high speed axial compressor facility
Session 11: Instrumentation & Measurement Techniques
Chair: Prof. Tom Verstraete
14:30 - 14:50 Bart BROUWERS: Visualization of flows in cohesive sediment layers
14:50 - 15:10 Muhsin Can AKKURT: Ray-tracing based PIV of turbulent flows in roughened circular channels
15:10 - 15:40 Coffee Break
15:40 - 17:15 Pitch Session
Enrico ANFUSO: Investigation of aerothermodynamic phenomena of aerospace flight in ground testing facilities
Fabio Miguel PEREIRA MORGADO: Multi-disciplinary modelling of the aerothermodynamically-induced fragmentation of re-entering bodies
Aysu ÖZDEN: Advanced numerical scheme for high-speed deflagration and detonation (tentative)
Pierrette ATIKPO: Near-field pollutant dispersion due to explosions
Benopit FOLOPPE: Multi-fidelity modeling of offshore wind energy systems including mesoscale variability at wind turbine scale: an application to wind farm control for grid balancing
Emmanuel GILLYNS: Wind turbine wakes impact on the dynamics of high-voltage cables for fatigue assessment and optimization
Romain POLETTI : Real-time optimization of bio-inspired wings using the deformable overset method and machine learning
Adithya VEMURI: Weather predictions for offshore wind energy: Case of extreme events
Bora Orcun CAKIR: Design and Analysis of a Novel High-Supersonic Aircraft Concept
Gert-Jan GLABEKE: Assessment and optimization of LIDAR Doppler velocimetry for complex atmospheric flows
Tommaso CARLESI: Development of an advanced experimental technique to measure turbulent heat flux in liquid metals
Giuseppe GANGEMI: Development of a high order fluid solver for air plasma sheath
Pedro JORGE: Development of gas-surface interaction models for rarefied flows
Pietro PARODI: Modeling and simulation of air plasmas using particle methods applied to Air-Breathing Electric Propulsion
Thanh-Son TRAN: Inlet distortion mitigation through gradient-based optimization
Federico BERTELLI: The role of turbulence length scales on the aerodynamics of internal flow passages
Gonçalo GRANJAL CRUZ : Improvement of measurement accuracy using Bayesian inference - Application to low speed UHBR fan
Yohanna HENROTEL: Modelisation of heat and mass transfer in multiphase heat exchangers core
Abdel Nour WASSIM: Topological optimization of a multiphasic heat exchanger manifold
Daniel Gabor KOVACS: Experimental investigation of space debris fragmentation during re-entry
Konstantinos VRATSINIS : Prediction of Potential Future Bearing Failures
Attendance is free of charge. Please confirm your participation by email to the VKI secretariat: This email address is being protected from spambots. You need JavaScript enabled to view it.. Your email should contain the following information: indicate your firstname, lastname, current nationality, address, affiliation and position, and mention as subject "Participation in 2021 VKI PhD Symposium."
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 symposium.
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