Berlin 2015 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 32: Focus Session: Statistics of fully developed turbulence

DY 32.7: Vortrag

Mittwoch, 18. März 2015, 17:15–17:30, BH-N 243

The Time Irreversibility of Turbulence — •Jennifer Jucha¹, Alain Pumir², Haitao Xu¹, and Eberhard Bodenschatz¹ — ¹Max Planck Institut für Dynamik und Selbstorganisation, Göttingen, Deutschland — ²Ecole Normale Supérieure, Lyon, Frankreich

The dissipation of energy at the smallest scales of a turbulent flow leads to an increase in entropy and therefore renders the flow time-irreversible. This irreversibility also influences the transport and mixing processes at larger scales of the flow but the connection was unclear so far. In this talk, an analytical relation between the dissipation process and the dispersion of particle clusters will be presented. Experimental and numerical results will be shown that confirm our theoretical approach.