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The use of Direct Numerical Simulation for solving industrial flow problems

Wagner, Claus and Shishkin, Andrei and Shishkina, Olga (2011) The use of Direct Numerical Simulation for solving industrial flow problems. In: ERCOFTAC Series Direct and Large-Eddy Simulation VIII, Vol. 15 (6). Springer Netherlands. pp. 397-404. ISBN 978-94-007-2481-5 (Print) 978-94-007-2482-2 (Online). ISSN 1382-4309 (Print)

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

Abstract

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.

Document Type:Contribution to a Collection
Additional Information:DOI: 10.1007/978-94-007-2482-2_63
Title:The use of Direct Numerical Simulation for solving industrial flow problems
Authors:
AuthorsInstitution or Email of Authors
Wagner, ClausUNSPECIFIED
Shishkin, AndreiUNSPECIFIED
Shishkina, OlgaUNSPECIFIED
Date:2011
Journal or Publication Title:ERCOFTAC Series
Refereed publication:Yes
Volume:Vol. 15
DOI:10.1007/978-94-007-2482-2_63
Page Range:pp. 397-404
Editors:
EditorsEmail
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
Publisher:Springer Netherlands
Series Name:Direct and Large-Eddy Simulation VIII
ISSN:1382-4309 (Print)
ISBN:978-94-007-2481-5 (Print) 978-94-007-2482-2 (Online)
Status:Published
Keywords:Turbulence, Direct Numerical Simulation, Aerodynamics
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 - Projekt Next Generation Train (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Prof. Dr.-Ing. Claus Wagner
Deposited On:22 Sep 2010 09:15
Last Modified:24 May 2013 11:05

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