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Numerical Simulation of the Thermal Comfort in a Double Decker Train Cabin

Konstantinov, Mikhail and Wagner, Claus (2015) Numerical Simulation of the Thermal Comfort in a Double Decker Train Cabin. University Printing House, Jyäskylä. CM3 conference 2015, 2015-05-25 - 2015-05-27, yväskylä, Finnland. ISBN 978-951-396219-7. ISSN 1456-4351.

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Official URL: http://www.mit.jyu.fi/scoma/cm3/index.php#top


The project “Next Generation Train” (NGT), initiated by the German Aerospace Center (DLR), faces the question of how to reduce travel times of future trains, while also improving the safety, passenger comfort and environmental aspects [1]. Part of this project is the prediction of thermal comfort in the NGT passenger cabin consisting of an upper and a lower deck. The geometry of the middle car cabin is presented in Fig. 1. For the prediction of the thermal comfort numerous thermal sources have to be taken into account in the flow simulations, one of which is the passenger itself. In our former work [2] we studied the air flow and the thermal comfort in the upper level of train cabin. The present paper focuses on numerical simulations of the air flow including heat transport, thermal radiation and the thermal comfort of passengers in both levels of the NGT cabin. The computations have been performed by coupling solutions of the Reynolds-averaged Navier-Stokes (RANS) equations, obtained with the Computational Fluid Dynamics (CFD) code OpenFOAM, with the heat transport within the passengers' predicted with the finite-element code THESEUS-FE, developed by P+Z Engineering GmbH. With the latter one, the bodies of passengers were modelled based on various layers with different heat transport characteristics, taking into account effects like blood flow, heat transfer through skin and clothing as well as activity levels and ambient humidity. Based on these computations the thermal comfort of passengers in the cabin was simulated and analysed. In particular the thermal comfort depends on the air flow, the temperature distribution and the thermal radiation in a specific cabin configuration.

Item URL in elib:https://elib.dlr.de/95961/
Document Type:Conference or Workshop Item (Speech)
Additional Information:The selected papers to be submitted by August 15, 2015 will follow a peer review process and will be published tentatively by Springer-ECCOMAS.
Title:Numerical Simulation of the Thermal Comfort in a Double Decker Train Cabin
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wagner, ClausUNSPECIFIEDhttps://orcid.org/0000-0003-2273-0568UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 35-39
Publisher:University Printing House, Jyäskylä
Series Name:Book of Abstracts
Keywords:train cabin, thermal comfort model, CFD, cabin air flow
Event Title:CM3 conference 2015
Event Location:yväskylä, Finnland
Event Type:international Conference
Event Start Date:25 May 2015
Event End Date:27 May 2015
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: Micknaus, Ilka
Deposited On:29 May 2015 14:20
Last Modified:24 Apr 2024 20:01

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