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Boundary Layer Control at Moving Train Models for Slipstream Investigations

Buhr, Alexander and Henning, Arne and Ehrenfried, Klaus (2020) Boundary Layer Control at Moving Train Models for Slipstream Investigations. International Journal of Railway Technology, 7 (1), pp. 1-25. Saxe-Coburg. doi: 10.4203/ijrt.7.1.1. ISSN 2049-5358.

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Official URL: https://www.ctresources.info/ijrt/paper.html?id=139

Abstract

Trackside induced airflow velocities are an important criterion for the design of high-speed trains. Due to the limited model size and different Reynolds numbers in moving model experiments, the induced flow may not be comparable to real trains. The idea is to control the thickness of the boundary layer using roughness elements. High-Speed PIV and conditional sampling are used to analyze the size and dynamics of the flow structures at the time of maximum velocity. The roughness elements effect the boundary layer and the flow structure at a lower measurement height by increasing the average and maximum velocity.

Item URL in elib:https://elib.dlr.de/111582/
Document Type:Article
Title:Boundary Layer Control at Moving Train Models for Slipstream Investigations
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Buhr, AlexanderAlexander.Buhr (at) dlr.dehttps://orcid.org/0000-0002-6805-2531
Henning, Arnearne.henning (at) dlr.dehttps://orcid.org/0000-0002-2806-8213
Ehrenfried, KlausKlaus.Ehrenfried (at) dlr.deUNSPECIFIED
Date:23 November 2020
Journal or Publication Title:International Journal of Railway Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:7
DOI :10.4203/ijrt.7.1.1
Page Range:pp. 1-25
Editors:
EditorsEmailEditor's ORCID iD
Pombo, JoaoInstitute of Railway Research, University of Huddersfield / J.Pombo@hud.ac.ukhttps://orcid.org/0000-0002-5877-1989
Publisher:Saxe-Coburg
ISSN:2049-5358
Status:Published
Keywords:slipstream, flow structures, double-deck train model, roughness elements, wake turbulence, conditional sampling, high-speed piv, tsg, tsi
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 for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Buhr, Alexander
Deposited On:10 Dec 2020 09:09
Last Modified:10 Dec 2020 09:09

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