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The use of Direct Numerical Simulation for solving industrial flow problems

Wagner, Claus und Shishkin, Andrei und Shishkina, Olga (2011) The use of Direct Numerical Simulation for solving industrial flow problems. In: Direct and Large-Eddy Simulation VIII ERCOFTAC Series, 15. Springer Verlag, Netherlands. Seiten 397-404. ISBN 978-94-007-2481-5 (Print) 978-94-007-2482-2 (Online). ISSN 1382-4309 (Print)

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Offizielle URL: http://link.springer.com/chapter/10.1007/978-94-007-2482-2_63

Kurzfassung

At the end of the last decade it was shown that predictions by means of Direct Numerical Simulations (DNS) agree well with experimental results obtained with Laser Doppler Anemometry and Particle Image Velocimetry (see for example Eggels et al. (1994)) if weakly turbulent flows, i.e. low Reynolds numbers, are considered. In spite of the widely accepted merit of DNS for fundamental flow studies until now the technique could not shake off the prejudice that it is of little use for solving industrial flow problems. The reason might be that the required computational resources increase with approximately the third power of the Reynolds number and most of the industrially relevant flows, and in particular aircraft or vehicle aerodynamics, are characterized by very high Reynolds numbers. In this regard Spalart (1999) estimated in the year 1999, that it will take until 2080 for DNS to be applicable to such flows. However, in the last years we performed a number DNS-studies which are relevant for various industrial branches. The common objective of these incompressible flow simulations was to produce a reliable and comprehensive flow data base for the validation and improvement of corresponding Reynolds-averaged Navier-Stokes simulations (RANS). The latter rely on turbulence models which are known to perform well for simple shear flows but not in general.

Dokumentart:Beitrag im Sammelband
Zusätzliche Informationen:DOI: 10.1007/978-94-007-2482-2_63, Part VI
Titel:The use of Direct Numerical Simulation for solving industrial flow problems
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Wagner, Clausclaus.wagner@dlr.de
Shishkin, AndreiAndrei.Shishkin@dlr.de
Shishkina, OlgaOlga.Shishkina@dlr.de
Datum:2011
Erschienen in:Direct and Large-Eddy Simulation VIII
Referierte Publikation:Ja
Band:15
DOI :10.1007/978-94-007-2482-2_63
Seitenbereich:Seiten 397-404
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Kürten, HansDepartment of Mechanical Engineering, Eindhoven University of Technology
Guerts, BernardFac. Mathematical Sciences, University of Twente
Armenio, VincenzoDipto. Ingegneria Civile e Ambientale, Università di Trieste
Fröhlich, JochenInstitute of Fluid Mechanics, Inst. Energiemaschinen und, Technical University of Dresden
Verlag:Springer Verlag, Netherlands
Name der Reihe:ERCOFTAC Series
ISSN:1382-4309 (Print)
ISBN:978-94-007-2481-5 (Print) 978-94-007-2482-2 (Online)
Status:veröffentlicht
Stichwörter:Turbulence, Direct Numerical Simulation, Aerodynamics
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Bodengebundener Verkehr
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V BF - Bodengebundene Fahrzeuge
DLR - Teilgebiet (Projekt, Vorhaben):V - Projekt Next Generation Train (alt)
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Fluidsysteme
Hinterlegt von: Prof. Dr.-Ing. Claus Wagner
Hinterlegt am:22 Sep 2010 09:15
Letzte Änderung:24 Apr 2015 13:16

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