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Scale-dependent Response of Fluid Turbulence under Variation of the Large-scale Forcing

dc.contributor.advisorBodenschatz, Eberhard Prof. Dr.
dc.contributor.authorDi Lorenzo, Fabio
dc.titleScale-dependent Response of Fluid Turbulence under Variation of the Large-scale Forcingde
dc.contributor.refereeBodenschatz, Eberhard Prof. Dr.
dc.description.abstractengIn this work, an experiment to measure the temporal evolution of energy transfer at different scales in a turbulent flow that was subject to a perturbation of the energy injection is described. Two types of experiments were performed. In the first type a step-function-like increase of the energy input was used to force the turbulent flow. In the second case the forcing of a fully developed turbulent flow was switched off to observe the decay of the turbulence. Experiments investigating the scale dependent response of a turbulent flow to a perturbation of the large-scale forcing have, to the best knowledge of the author, not been done so far. This is due to the complexity of the endeavor and the limitations of state-of-the-art measurement techniques. The approach to overcome these limitations and the hardware developed for this purpose is also documented in this
dc.contributor.coRefereeEnderlein, Jörg Prof. Dr.
dc.subject.engTurbulence, Scale-dependent response, Lagrangian Particle Tracking, real-time image compression, FPGAde
dc.affiliation.instituteGöttinger Graduiertenschule für Neurowissenschaften, Biophysik und molekulare Biowissenschaften (GGNB)de
dc.subject.gokfullBiologie (PPN619462639)de

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