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Numerical study on the decay and amplification of turbulence in oscillatory pipe flows

Feldmann, Daniel and Wagner, Claus (2012) Numerical study on the decay and amplification of turbulence in oscillatory pipe flows. TI2012: 3rd International Conference on Turbulence and Interactions, 11. - 15. Jun. 2012, La Saline-les-Bains, Réunion Island.

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Official URL: http://ti2012.onera.fr/node/9

Abstract

Results of three-dimensional direct numerical simulations of oscillatory pipe flows at two high Wo 2 f13;26g are presented and discussed. Starting from a fully-developed turbulent velocity field, the flows either relaminarise or reach a conditionally or fully turbulent state, depending onWo and Re. Analysing the temporal and phase-averaged evolution of several quantities, reveals considerably different behaviour of the wall shear stress and the RMS velocity profiles, while the integral bulk flow only reflects minor differences. Furthermore, utilising two different initial conditions do not significantly influence the developing oscillatory bulk flow.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Book of proceedings (in Notes of Numerical Fluid Mechanics and Multidisciplinary Design (NMFM) – Springer)
Title:Numerical study on the decay and amplification of turbulence in oscillatory pipe flows
Authors:
AuthorsInstitution or Email of Authors
Feldmann, Danieldaniel.feldmann@dlr.de
Wagner, Clausclaus.wagner@dlr.de
Date:11 June 2012
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1-7
Series Name:Conference Proceedings
Status:Published
Keywords:DNS, turbulence, oscillatory pipe flow
Event Title:TI2012: 3rd International Conference on Turbulence and Interactions
Event Location:La Saline-les-Bains, Réunion Island
Event Type:international Conference
Event Dates:11. - 15. Jun. 2012
Organizer:Prof. Michel Deville, Dr. Vincent Gleize, Dr. Thiên-Hiêp Lê, Dr. Marc Terracol, Ass. Prof. Stéphane Vincent
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Daniel Feldmann
Deposited On:30 Jul 2012 16:04
Last Modified:12 Dec 2013 21:30

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