On the Scales of Turbulent Motion at High Reynolds Numbers

Sinhuber, Michael

dc.contributor.advisor	Bodenschatz, Eberhard Prof. Dr.
dc.contributor.author	Sinhuber, Michael
dc.date.accessioned	2015-12-08T10:12:57Z
dc.date.available	2015-12-08T10:12:57Z
dc.date.issued	2015-12-08
dc.identifier.uri	http://hdl.handle.net/11858/00-1735-0000-0028-8662-F
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-5420
dc.language.iso	eng	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc	571.4	de
dc.title	On the Scales of Turbulent Motion at High Reynolds Numbers	de
dc.type	doctoralThesis	de
dc.contributor.referee	Bodenschatz, Eberhard Prof. Dr.
dc.date.examination	2015-06-01
dc.description.abstracteng	Turbulence is a physical state of a fluid far from equilibrium. In turbulent flows, a huge number of degrees of freedom is excited and a wide range of interacting scales determines the flow characteristics. Turbulent flows are nonlinear and non-local. They exhibit chaotic spatial and temporal dynamics and extreme events are likely to occur. Up to today, there is no unified theory of turbulence, very few exact predictions from the governing equations are available and the precise predictability of the behavior of turbulent flows is limited. Additionally, it is not known exactly, how the flow quantities depend on the turbulent flow’s vigorousness that is given by the so-called Reynolds number. In this thesis, high-Reynolds number turbulence and its dependencies on the Reynolds number are investigated by the means of hot-wire measurements in the Variable Density Turbulence Tunnel at the Max-Planck-Institute for Dynamics and Self-Organization in Göttingen. The Reynolds number dependence of the decay exponent of freely decaying turbulence is found to be consistent with Saffmans prediction. Furthermore, with extremely long datasets, the statistical properties of turbulence in the inertial range are investigated in great detail, finding deviations from the expected scaling behavior.	de
dc.contributor.coReferee	Dillmann, Andreas Prof. Dr. Dr.
dc.contributor.thirdReferee	Müller, Marcus Prof. Dr.
dc.contributor.thirdReferee	Bewley, Gregory P. Dr.
dc.contributor.thirdReferee	Niemeyer, Jens Prof. Dr.
dc.contributor.thirdReferee	Lube, Gert Prof. Dr.
dc.subject.eng	Turbulence	de
dc.subject.eng	Classical Grid	de
dc.subject.eng	Decay of turbulence	de
dc.subject.eng	Hot-Wires	de
dc.subject.eng	Scaling	de
dc.subject.eng	Wind tunnel	de
dc.subject.eng	High Reynolds number	de
dc.identifier.urn	urn:nbn:de:gbv:7-11858/00-1735-0000-0028-8662-F-1
dc.affiliation.institute	Göttinger Graduiertenschule für Neurowissenschaften, Biophysik und molekulare Biowissenschaften (GGNB)	de
dc.subject.gokfull	Biologie (PPN619462639)	de
dc.identifier.ppn	842547479

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GGNB - Göttinger Graduiertenzentrum für Neurowissenschaften, Biophysik und molekulare Biowissenschaften [1114]
GGNB - Göttingen Graduate Center for Neurosciences, Biophysics and Molecular Biosciences

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