15th European Turbulence Conference 2015
August 25-28th, 2015, Delft, The Netherlands
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Dissipative Range Scaling of Higher Order Structure Functions for Velocity and Passive Scalars


Go-down etc15 Tracking Number 417

Presentation:
Session: Intermittency and scaling 3
Room: Room H
Session start: 10:30 Wed 26 Aug 2015

Michael Gauding   m.gauding@itv.rwth-aachen.de
Affifliation: TU Freiberg
Jonas Boschung   j.boschung@itv.rwth-aachen.de
Affifliation: RWTH-Aachen University
Christian Hasse   christian.hasse@iec.tu-freiberg.de
Affifliation: TU Freiberg
Norbert Peters   n.peters@itv.rwth-aachen.de
Affifliation: RWTH-Aachen University

Topics: - Intermittency and scaling

Abstract:

Differently to Kolmogorov's second similarity hypothesis, we find that the 2n-th order velocity and scalar structure functions scale with n-th order moment of the energy dissipation and the scalar dissipation, respectively. The origins of this scaling are analyzed by the transport equations of the fourth order velocity and scalar increment moments and by direct numerical simulations.