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Large Eddy Simulations of Side Flow past a Generic Model of a High-Speed-Train using a Finite Volume and a Lattice Boltzmann Method

Kin, Natalia and Deiterding, Ralf and Wagner, Claus (2016) Large Eddy Simulations of Side Flow past a Generic Model of a High-Speed-Train using a Finite Volume and a Lattice Boltzmann Method. Railways 2016, The Third International Conference on Railway Technology: Research, Development and Maintenance, 05. - 08. April 2016, Cagliari, Italy. DOI: 10.4203/ccp.110.41 ISSN 1759-3433

Full text not available from this repository.

Official URL: http://www.civil-comp.com/conf/rw2016/rw2016.htm

Abstract

Large Eddy simulations (LES) of the flow around a simplified model of the concept high-speed Next Generation Train (NGT) of the DLR are performed with a lattice Boltzmann method (LBM) and a second order accurate finite volume method (FVM). The objective is to identify and compare the performance of both approaches with respect of the prediction of cross wind effects. In order to access the accuracy of both methods, simulations of the flow around a sphere are performed for Re = 10^4 prior to the LES of the flow around the generic NGT train with a yaw angle of 30° and a Reynolds number of Re = 2.1 x 10^5. For all considered flow cases, the results are analysed with respect to instantaneous flow fields and the induced aerodynamic. The comparison reveals that the computational requirements for the LES with the LBM are lower while the LES with the FVM is more accurate in predicting the aerodynamic forces.

Item URL in elib:https://elib.dlr.de/99154/
Document Type:Conference or Workshop Item (Speech)
Title:Large Eddy Simulations of Side Flow past a Generic Model of a High-Speed-Train using a Finite Volume and a Lattice Boltzmann Method
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kin, Natalianatalia.kin (at) dlr.deUNSPECIFIED
Deiterding, Ralfralf.deiterding (at) dlr.deUNSPECIFIED
Wagner, Clausclaus.wagner (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.4203/ccp.110.41
Page Range:pp. 1-13
Series Name:Conference Proceedings online
ISSN:1759-3433
Status:Published
Keywords:Large Eddy Simulation, Finite volume method, Lattice Boltzmann method, high speed train, sphere, cross wind effects
Event Title:Railways 2016, The Third International Conference on Railway Technology: Research, Development and Maintenance
Event Location:Cagliari, Italy
Event Type:international Conference
Event Dates:05. - 08. April 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Bachmann, Barbara
Deposited On:10 Jan 2017 16:12
Last Modified:10 Jan 2017 16:12

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