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Job Record #19113
TitlePrediction of vortex-induced wind turbine tower vibrations
CategoryPhD Studentship
EmployerUni Stuttgart: Institute of Aerodynamics and Gas Dynamics
LocationGermany, Stuttgart
InternationalYes, international applications are welcome
Closure Date* None *
Context: Take part in the energy transition ─ conduct research in wind energy!

The ever-increasing size of wind turbines and the associated increase in component flexibility lead to an increased risk of aeroelastic instability. In particular, vortex-induced vibrations of the tower occur during the construction of the turbine, where resonance between the tower's natural frequency and cyclically detaching, unsteady vortex streets in the wake can lead to a critical oscillation and even failure of the tower structure.

As part of a German joint research project led by Enercon and involving universities, research institutes and industry, the mechanisms of vortex-induced oscillations will be studied for different wind conditions and prediction methods will be developed and validated. Detailed wind tunnel experiments will be carried out by a project partner to validate the simulations.

The IAG is a member of the WindForS research network, whose research focus is wind energy in complex terrain. WindForS partners have initiated a major research initiative in which federal and state funding is being used to advance the construction of a test field in complex terrain. As part of this effort, two instrumented research turbines are being erected and detailed measurements of the local wind fields including deformations of the turbines are planned. This test field will be used in further research projects, including the MeTuSA project, in the framework of which this position is to be filled at the IAG.

Project Description
The Wind Energy Working Group at IAG has developed a CFD-based multidisciplinary simulation environment that allows detailed studies of the aerodynamics, aeroelasticity and aeroacoustics of wind turbines. This includes their interactions with the turbulent atmospheric inflow and complex terrain orography, buildings or vegetation. This simulation toolchain will be used in the research project for high-precision aeroelastic simulation of the flow around both tower segments and complete towers to analyze the physics of unsteady wake development in the flow. The wake is calculated using LES CFD, which allows a physically correct representation of wake instabilities and interactions with the turbulent external flow of the atmospheric boundary layer. In addition to the analysis of vortex-induced vibrations, the simulation results and wind tunnel data will be used to further develop an industrially applicable and computationally efficient prediction model. This work builds on many years of research at the IAG.
For further information about the project please contact Dr. Thorsten Lutz.

Selection process:
The University of Stuttgart seeks to increase the number of women in areas, where they are underrepresented. Women are therefore expressly encouraged to apply. Full-time positions are generally divisible. Severely handicapped people are given priority if they have the same aptitude. Recruitment is carried out by the central administration. The University of Stuttgart strives for gender and diversity equality. We welcome applications from all backgrounds. Work from remote is allowed 3 days per week.

Prerequisite is a very good MSc degree in a technical or scientific field of study with sound knowledge in fluid mechanics, aerodynamics and CFD application including mesh generation.
Knowledge of German language is required

The following skills will be considered an asset to the candidate:
• Experience with CFD and HPC
• Knowledge of wind energy, meteorology or aeronautics
• Software Development (Python, Fortran, C++, Scripting)
• Finite volume mesh generation
• Work in research projects and consortia
• Atmospheric inflow and terrain interaction
• Turbulence and meteorological phenomena
• Validation of numerical models
• International experience

How to apply:
Applications should contain a cover letter, a resume with a list of publications and digital or scanned academic transcripts from bachelor and master degrees. Bundle everything into a single PDF document and send to the team leader: Dr. Thorsten Lutz.

Application deadline: open until filled, priority will be
given to applications received before May 15 2024

Starting date: as soon as possible

Team Leader Wind Energy
Dr.-Ing. Thorsten Lutz
Contact Information:
Please mention the CFD Jobs Database, record #19113 when responding to this ad.
NameDr. Thorsten Lutz
Email ApplicationYes
Record Data:
Last Modified09:44:09, Thursday, April 18, 2024

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