elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Study on the resolution requirements for DNS in turbulent Rayleigh-Bénard convection

Kaczorowski, Matthias and Wagner, Claus (2009) Study on the resolution requirements for DNS in turbulent Rayleigh-Bénard convection. 2nd International Conference on Turbulence and Interactions 2009, 2009-05-29 - 2009-06-02, Sainte-Luce, Martinique, France.

[img] PDF - Registered users only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
621kB

Official URL: http://ti2009.onera.fr

Abstract

Two different recommendations by Gr"otzbach and Verzicco which are based on DNS that differ by about $5$ orders of magnitude lead to the assumption that the resolution requirements strongly depend on the turbulent sate of the flow. It is therefore envisaged to perform a number of direct simulations for Ra>10^5 and compare not only the Nusselt number but also the impact of the resolution on the statistics of the boundary layers as a function of Ra. For this purpose a set of numerical simulations in the range 3.5x10^5 <= Ra <= 2.31x10^8 is available, so that the grids can be precisely adapted to the desired resolution. Hence, not only global quantities, but also local properties of the flow can be compared, in order to have a sound basis for a comparison.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Accepted papers will be published in Notes of Numerical Fluid Mechanics and Multidisciplinary Design (NMFM) – Springer.
Title:Study on the resolution requirements for DNS in turbulent Rayleigh-Bénard convection
Authors:
AuthorsInstitution or Email of Authors
Kaczorowski, MatthiasUNSPECIFIED
Wagner, ClausUNSPECIFIED
Date:2009
Refereed publication:No
In ISI Web of Science:No
Status:Published
Keywords:resolution, Rayleigh-Benard, boundary layers
Event Title:2nd International Conference on Turbulence and Interactions 2009
Event Location:Sainte-Luce, Martinique, France
Event Type:international Conference
Event Dates:2009-05-29 - 2009-06-02
Organizer:Onera
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: Matthias Kaczorowski
Deposited On:26 Nov 2009 15:18
Last Modified:12 Dec 2013 20:32

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.