Control and optimization of a Lorentz force based actuator system for external flow

  • Regelung und Optimierung eines lorentzkraftbasierten Aktuatorsystems für Außenströmungen

Seidler, Martin Florian; Abel, Dirk (Thesis advisor); Schröder, Wolfgang (Thesis advisor)

Jülich : Forschungszentrum Jülich GmbH (2020, 2021)
Book, Dissertation / PhD Thesis

In: Energie & Umwelt 524
Page(s)/Article-Nr.: 1 Online-Ressource (xii, 136 Seiten) : Illustrationen, Diagramme

Dissertation, RWTH Aachen University, 2020


The research unit FOR 1779 develops robust methods for the reduction of turbulent friction drag via wavy surface oscillations. For this research, wind tunnel experiments with a Lorentz force actuator system producing traveling surface waves are conducted. An improved version of the system necessitates feedback control that is designed based on iterative learning control and verified in reference tracking and wind tunnel measurements. Due to thermal limits the design does not reach the desired parameters. A new design is optimized with the help of numerical methods and a first prototype reaches the desired parameters.