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Application of the Standard Aeronautical CFD Method FLOWer to Trains Passing on Open Track

Pahlke, K. (1999) Application of the Standard Aeronautical CFD Method FLOWer to Trains Passing on Open Track. Transaero Symposium, Paris (fr), 04.-05.05.1999.

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Abstract

The time-accurate 3D Euler/Navier-Stokes code FLOWer of DLR is applied to trains passing on open track test cases. One test case with the German ICE and three test cases with the Italian ETR500 high speed train were selected. It turned out that the accuracy requirements for train passing applications are very high because absolutely and relatively small pressure differences, compared to typical aeronautical applications, have to be resolved. In order to reach the required accuracy the grid quality in terms of grid fineness and smoothness (cell stretching, cell distortion) on the surfaces and in the flow field is of primary importance. The paper addresses the numerical problems encountered during these applications. Computed pressure signals are compared with full scale measurements. It is shown that FLOWer is able to accurately compute train passing configuration but with a high computational effort.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Application of the Standard Aeronautical CFD Method FLOWer to Trains Passing on Open Track
Authors:
AuthorsInstitution or Email of Authors
Pahlke, K.UNSPECIFIED
Date:1999
Status:Published
Keywords:CFD, Euler equations, train aerodynamics, train passing on open track, unsteady flows
Event Title:Transaero Symposium, Paris (fr), 04.-05.05.1999
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: Claudia Grant
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:03

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