Thesis Modeling of Aerodynamic Excitation and Damping for Intentionally Mistuned Blisks

Everllence enables its customers to achieve sustainable value creation in the transition towards a carbon neutral future. Addressing tomorrows challenges within the marine energy and industrial sectors we improve efficiency and performance at a systemic level. Leading the way in advanced engineering for more than 250 years we provide a unique portfolio of technologies. Headquartered in Germany Everllence employs some 15000 people at over 120 sites globally. Our after-sales brand Everllence PrimeServ offers a vast network of service centres to our customers all over the world.

Bladed disks (blisks) in axial turbines are subject to complex aeroelasticinteractions. Intentional mistuning can be used to reduce vibration amplitudes
and increase component lifetime requiring a solid understanding ofaerodynamic excitation and damping mechanisms.

Within the scope of this masters thesis the following topics will be addressed:

• Analysis of aerodynamic excitation based on CFD simulations
• Investigation of the influence of operating conditions and geometricvariations
• Development of efficient modeling approaches for aerodynamicexcitation and damping
• Optional: Application of data-driven methods (ML) to support modeldevelopment

The thesis offers the opportunity to work on current challenges in industrialturbomachinery research and to combine state-of-the-art CFD aeroelastic and
data-driven methods.

• Masters student in Mechanical Engineering Aerospace Engineering or a comparable field
• Experience with CFD simulations required preferably using NUMECAFineTurbo and/or ANSYS CFX
• Basic knowledge of turbomachinery is desirable
• Basic knowledge of Python and interest in machine learning are anadvantage
• Strong analytical skills and interest in interdisciplinary topics

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Feel free to contact Nicola Hasl if you have any questions. Email:

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Everllence headquarters in Augsburg were once the setting for the invention of the diesel engine with which Rudolf Diesel declared war on the steam engine. Today our primary mission is to overcome the challenges faced by the marine energy and industrial sectors not only to ensure our customers success but also to preserve our environment. From small increases in the efficiency of individual components such as dual-fuel engines exhaust gas treatment systems or software solutions to major innovations at system level every day around 5000 employees work at our site in the beautiful renaissance city of Augsburg to create a better future. You too can help us do that. We are the employer for you if you want to make a difference.

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