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Dirk Ekelschot
Contact Information
Flat 132, The Stephenson building.CB1 2FS Cambridge, United KingdomPhone: (+44) 75 46 16 87 63Email: [email protected]
Personal information
Date of birth: May 27th, 1987Place of birth: Tilburg, the NetherlandsGender: MaleNationality: Dutch
Education
PhD candidate in Aeronautical Engineering, Imperial College London. September 2012 - September 2015London, United Kingdom.
Chair: Aeronautical Engineering.Research area: High-order spectral/hp element method with particular interest in adjoint methods applied to meshadaption for compressible flow problems.Research project: The development of a goal-based error estimator for compressible flow problems.Supervisors: Dr. Joaquim Peiró and Prof. Dr. Spencer J. Sherwin.Project description: My research project was defined within the framework of the Advances in Numerical and An-alytical tools for Detached flows programme (ANADE, www.anade-itn.eu). The main objective of the ANADE isto consolidate a joint European training programme for research in fluid dynamics and to share knowledge betweenindustry and academia. As one the PhD fellows involved in ANADE, I worked in the development of Nektar++
(www.nektar.info), which is a finite element package that can be used to construct both low- and high-order spectralelement solvers. My main contributions to the ANADE project are the further development of the unsteady high orderdiscontinuous Galerkin (DG) solver used for compressible flow problems. Particularly, the adjoint solver and the de-velopment of mesh refinement strategies, both in polynomial order and spatial discretisation, using sensitivity analysis(adjoint-based approach), are my main contributions.
Secondment at University of Cambridge. March - May 2015Cambridge, United Kingdom.
Faculty: Department of Engineering.Supervisor: Dr. Matthew Juniper.Project description: Verification of the adjoint solver by comparing both compressible inviscid and compressiblelaminar flow results. My results are compared with results obtained using TAU, which is a lower order finite volumecode developed by the German Aerospace Center (DLR) and used by Airbus, and elsA, which is also a low-order finitevolume code developed and used by the French Aerospace Lab (ONERA). Furthermore, I am implementing the unsteadyadjoint solver, which will allow Nektar++ to solve for optimisation problems flow flows with unsteady features.
Secondment at Universidad Politécnica de Madrid. February - March 2014Madrid, Spain.
Faculty: Aeronautical Engineering.Supervisor: Dr. Eusebio Valero.Project description: Development of a smooth artificial viscosity model to be used as an alternative smooth shock-capturing technique. This technique was successfully implemented in Nektar++. Furthermore, the sensor-basedp-refinement strategy was implemented in Nektar++ and compared with the p-refinement strategy implemented in the
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high-order DG code available at Universidad Politécnica de Madrid.
MSc. Aerospace Engineering, Delft University of Technology. September 2009 - July 2012Delft, The Netherlands.
Chair: Aerodynamics.Research area: Reentry vehicle aerodynamics.Graduation project: Investigation of Görtler vortices in hypersonic flow using Quantitative Infrared Thermography(QIRT) and Tomographic Particle Image Velocimetry (Tomo-PIV).Supervisors: Dr. Ferdinand Schrijer and Prof. Dr. Fulvio Scarano.Project description: Performed research regarding Görtler vortices in hypersonic double compression ramp flow. Quan-titative Infrared Thermography (QIRT), Schlieren photography, Planar Particle Image Velocimetry (PIV), Stereo-PIVand Tomographic PIV were applied to obtain more insight in the phenomena of hypersonic boundary layer instabilities.Based on the QIRT experiments an estimate is made of the growth rate of the longitudinal vortices and Tomo-PIV isused to visualise these vortices in 3D. The Tomo-PIV were carried out for the first time in the Hypersonic Test FacilityDelft (HTFD) and the validation of the technique was reported in the thesis. See the attached thesis for more detailedinformation.
BSc. Aerospace Engineering, Delft University of Technology September 2005 - September 2009Delft, The Netherlands.
Graduation project: Project HyFly: Force measurements on free flying models in hypersonic flow.Supervisors: Dr. Leo Veldhuis and Dr. Ferdinand Schrijer.Project description: Design of a free flying force measurement system in the Hypersonic Test Facility Delft (HTFD).The design consisted of a release system, measurement system and a catching system to obtain the lift and drag forceon a free flying model.
Minor in Aircraft Design, Delft University of Technology. September 2008 - May 2009Delft, The Netherlands.
Minor in Music, Leiden University. September 2008 - January 2009Leiden, The Netherlands.
Propedeutisch Examen Diploma, Delft University of Technology. September 2005 - September 2006Delft, The Netherlands.Propedeutic Diploma (first year engineering) in Aerospace Engineering.
Voortgezet Wetenschappelijk Onderwijs (VWO) Diploma, Theresia Lyceum. 1999 - 2005Tilburg, The Netherlands.Dutch high school diploma.
Professional experience
Internship at German-Dutch Wind tunnels (DNW). October - December 2010Braunschweig, Germany.
Research area: Wind tunnel acoustic research.Research project: Noise reduction of the Large Low-Speed Facility (LLF) cooler/straightener configuration.Supervisors: Prof. Dr. Georg Eitelberg and Dr. Michael Pott-Pollenske.
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Project description: Performed research on the acoustic behaviour of a small scale cooler/flow straightener configu-ration of the Large Low-speed Facility (LLF) of Dutch-German Wind Tunnels (DNW). This research was performed atthe technical acoustic department at the German Aerospace Center (DLR).
Workshops
ANADE workshop on High-order methods for flow simulation. Imperial College London, London, United Kingdom,January 16-18, 2013.Organiser.
ANADE workshop on Progress in Flow In stability Analysis and Laminar-Turbulent Transition Modeling. Von KarmanInstitute for Fluid Dynamics, Brussels, Belgium, July 2-6 2014.
ANADE workshop on Numerical Prediction of Detached Flows. Universidad Politécnica de Madrid, Madrid, Spain,October 23-24 2014.Presented: 3D p-adaption for compressible flows.
ANADE workshop on Receptivity and Sensitivity Analyses; Uncertainties and Mesh Adaptation Algorithms. Universityof Cambridge, Cambridge, United Kingdom, September 23-26 2014.Presented: p-adaption for compressible inviscid flow problems using goal-based error estimation.
Conferences
23rd Conference on Computational Mechanics ACME-UK 2015, Swansea, Wales, United Kingdom, April 8-10 2015. Apresentation was given on p-adaption for compressible laminar flow problems using goal-based error estimation.
67th Annual Meeting of the American Physics Society (APS) Division of Fluid Dynamics, San Francisco, California,USA, November 23-25 2014. A presentation was given on p-adaption for compressible laminar flow problems usinggoal-based error estimation.
6th European Conference on Computational Fluid Dynamics (ECCOMAS ECFD VI), Barcelona, Spain, July 20-252014. Presentation was given on p-adaption for compressible inviscid flow problems using goal-based error estimation.
6th International Conference on Adaptive Modeling and Simulation (ADMOS 2013), Lisbon, Portugal, June 3-5, 2013.A presentation given on p-adaption for compressible flows.
Publications/Conference proceedings
D. Ekelschot , D. Moxey, J. Peiro and S.J. Sherwin. p-adaption for compressible laminar flow problems using agoal-based error estimator, In the proceedings of the 23rd Conference on Computational Mechanics ACME-UK 2015.
D. Moxey, D. Ekelschot, J. Peiro, S.J. Sherwin. A thermo-elastic analogy for high-order curvilinear meshingwith control of mesh validity and quality, invited paper under review in Comput. Aided Design, 2015.
C.D. Cantwell, D. Moxey, A. Comerford, A. Bolis, G. Rocco, G. Mengaldo, D. De Grazia, S. Yakovlev,J.-E. Lombard, D. Ekelschot, B. Jordi, H. Xu , Y. Mohamied, C. Eskilsson, B. Nelson, P. Vos, C. Biotto,
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R.M. Kirby, S.J. Sherwin. Nektar++: An open-source spectral/hp element framework, Computer Physics Commu-nications Volume 192, Pages 205-219, 2015
D. Ekelschot , D. Moxey, J. Peiro and S.J. Sherwin. p-adaption for compressible laminar flow problems us-ing a goal-based error estimator, In the proceedings of the 67th Annual Meeting of the APS Division of Fluid Dynamics2014
D. Ekelschot, D. Moxey, J. Peiro, S.J. Sherwin and C.Biotto, p-adaption for compressible flows, In the pro-ceedings of the 6th Internation Conference on Adaptive Modeling and Simulation ADMOS 2013.
F. Avallone, C.S. Greco and D. Ekelschot. 2D Inverse Heat Transfer Measurements by IR Thermography inHypersonic Flows, 11th QIRT 2012 conference, 11-14 June, Naples, Italy.
Fellowships and Awards
PhD project funded under the Marie Sklodowska-Curie actions - Research Fellowship Programme for industrial doctor-ates.
Awarded the price for best post graduate research paper at the 23rd Conference on Computational Mechanics ACME-UK 2015 held in Swansea, Wales, United Kingdom, April 2015.
Awarded the price for best student paper at the 11th QIRT 2012 conference in Naples, Italy, June 2012.
Languages
Dutch (native proficiency), English (full professional proficiency) and Spanish (elementary proficiency)
Computer Skills
Operating Systems: UNIX, Mac OS, Windows.Software: Tecplot, Catia, Paraview, Davis, Maple, Mathematica, Microsoft Office, MS Excel, MS Word, LATEX2#.Languages: C++, Java, Mathworks MATLAB.
References
Dr. Joaquim Peiró Prof. Dr. Spencer SherwinReader Professor and McLaren Racing/Royal AcademyDepartment of Aeronautics of Engineering Research ChairImperial College London Department of AeronauticsSouth Kensington Campus Imperial College LondonLondon SW7 2AZ South Kensington Campuse-mail: [email protected] London SW7 2AZ
e-mail: [email protected]
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Dr. Ferdinand Schrijer Prof. Dr. Fulvio ScaranoAssistant Professor Professor and head of the Aerodynamics ChairDepartment of Aerodynamics Department of AerodynamicsFaculty of Aerospace Engineering Faculty of Aerospace EngineeringDelft University of Technology Delft University of Technology2629HS Delft, The Netherlands 2629HS Delft, The Netherlandse-mail: [email protected] e-mail: [email protected]
