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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) | ||||||
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| 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: |
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| Date: | 11 June 2012 | ||||||
| Refereed publication: | No | ||||||
| In SCOPUS: | 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: | V BF - Bodengebundene Fahrzeuge | ||||||
| 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: | 30 Jul 2012 16:05 |
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