Julien Deparday
Experimental fluid dynamics. My research and experience.
Resume
Education
since 2025
RTDT Laboratories AGCTO
- Develop, implement, manage and evaluate the company's technology roadmap and strategies.
- Develop, implement, manage and evaluate new applications for the Aerosense system and other hardware and software that RTDT develops, installs or works with.
- Meet and coordinate with external partners who are involved in the development, supply and manufacture of the Aerosense technology.
- Manage the company's human and technological resources.
2020-2025
OST-Eastern Switzerland University of Applied Sciences, Rapperswil, SwitzerlandSenior scientist
Researcher at the Wind Energy group, in the Institute for Energy Technology:
- Mistery project (2023-2026), funded by SNSF in Switzerland and ANR in France for
2mCHF:- modelling and estimation of unsteady aerodynamic flow at high Reynolds number,
- coordinator of the project with 4 partners: OST, ETHZ, CentraleSup´elec, and Ecole
Centrale Nantes, - aerodynamic experiments in a large-scale wind tunnel at CSTB in Nantes, France
on a blade section with a chord of 1.25m.
- Aerosense project (2020-2023), , funded by SNSF and Innosuisse as a Bridge - Discovery
programme for 1.6 mCHF:- developed an aerodynamic measurement system to be installed on wind turbine blades which is thin, minimally intrusive, easy to install, low-power, with wireless transmission, comprising 40 pressure sensors, 10 microphones and an inertial measurement unit,
- responsible for the technical development of the aerodynamic measurement system: close communication with electronic researchers, mechanical engineers and computer researchers,
- developed the corrections and calibration methods to acquire accurate measurements.
- Project leader of a research and development collaboration with a Swiss company, Netico, funded by the Swiss Innovation Agency on machine learning and in-field measurements.
- Supervised bachelor and master projects.
2017-2020
EPFL - Ecole Polytechnique Fédérale de Lausanne, SwitzerlandPostdoctoral research associate
Post-doc at UNFoLD, in the Mechanical Engineering Institute:
Experimental study of the aerodynamic performance of vertical axis wind turbine in the SMART-H project funded by the Swiss National Science Foundation.
- developed low-order models of aerodynamic performance,
- prepared, carried-out and post processed experiments.
Proposed and supervised master and bachelor projects. Contributed to courses and tutorials in fluid mechanics and aerodynamics courses.
Safety coordinator of the lab.
2012-2016
Ecole Navale, IRENav, Brest, FranceTeaching and research assistant
PhD student and teaching assistant in the Mechanical and Energetical Engineering in Naval Environment department (M2EN):
Experimental study of fluid-structure interaction on downwind sails:
- developed time-resolved instrumented system onboard a sailing boat measuring sail shape, wind, loads, aerodynamic pressures and boat motions,
- co-developed and used custom-made pressure sensors with the University of Auckland,
- developed calibration and measurement algorithms for custom-made load cells and inertial measurement units,
- designed a unique photogrammetric system to measure flying shape of downwind sails,
- planned and conducted full-scale in-situ testing, led a team of 6 persons,
Taught 100h per year of lectures, tutorials and practical work to naval officer trainees (master level) and to master students.
2014
University of Auckland, New ZealandGuest Research Assistant
3 month secondment at the Yacht Research Unit in the Mechanical Engineering department, to conduct wind tunnel and full-scale experiments in a UK-France-NZ collaboration project SailingFluids funded by the European Union's FP7-people and by the Royal Society of New Zealand.
2010-2012
C-Job & Partners BV, Hoofddorp, the NetherlandsNaval Engineer
- designed structure and general arrangement for various types of vessels such as dredgers, heavy lift vessels, offshore installation vessels, mega yachts,
- wrote reports and technical drawings in compliance with guidelines and classification societies,
- analysed seakeeping for feasibility studies of offshore operations.
Education
2016
Université Bretagne Occidentale - Ecole Navale, Brest, FrancePhD in Mechanical Engineering
doctoral thesis: Experimental studies of Fluid-Structure Interaction on Downwind sails
supervisors:
- Prof M. Rabaud - FAST Université Paris Sud,
- Dr. P. Bot - IRENav Ecole Navale,
- Dr. F. Hauville - IRENav Ecole Navale
grade: Highest distinction: Mention très honorable à l'unanimité du jury.
2010
ENSTA Bretagne, Brest, FranceM.Sc. in Mechanical Engineering
Diplôme d'Ingénieur
Studied in Naval and Offshore architecture, specialized in hydrodynamics.
master thesis: Spinnaker Flying Shape determination: Comparison of a spinnaker model in a Twisted Flow Wind Tunnel with a full scale spinnaker using photogrammetric measurements.
supervisors: Prof. Dr.-Ing K. Graf, Dr. K. Roncin
Knowledges
- Wind energy
- Aerodynamics
- Potential flow
- Fluid-structure interaction
- Beam structure
- Engineering drawing
- Naval engineering
- Ship stability
- Seakeeping
- Field measurements
Measurement knowledges
- High speed particle image velocimetry
- Pressure sensor
- Load cell and strain gauge
- Inertial measurement unit
- Photogrammetry
- Microphones