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Detached-eddy simulations for steady and unsteady crosswind aerodynamics of ground vehicles
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0002-9061-4174
Scania AB, Truck Chassis Development,Sweden.
2011 (English)In: 20th AIAA Computational Fluid Dynamics Conference 2011, 2011Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents Detached-Eddy Simulations (DES) of two generic vehicle models with different design characteristics and different Re numbers under steady and unsteady crosswind conditions. The good agreement with the experimental data available on the first model in gusty conditions demonstrates the capabilities of the combination of transient boundary data together with DES to accurately simulate unsteady crosswind ows for ground vehicles. The second geometry serves to evaluate whether polyhedral meshes with a second order upwind scheme, that is a numerical framework usually employed for RANS in industry, can be used for DES on crosswind ows. The results with the polyhedrals show comparable results with the reference hexahedral mesh and can be effciently used to provide some insights on complex unsteady ows.

Place, publisher, year, edition, pages
2011.
Keyword [en]
Boundary data, Design characteristics, Detached eddy simulations, Experimental datum, Hexahedral mesh, Polyhedral meshes, Second order upwind scheme, Vehicle model, Computational fluid dynamics, Ground vehicles
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-148735DOI: 10.2514/6.2011-3066Scopus ID: 2-s2.0-84880576803ISBN: 9781624101489 (print)OAI: oai:DiVA.org:kth-148735DiVA: diva2:741208
Conference
20th AIAA Computational Fluid Dynamics Conference 2011, 27 June 2011 through 30 June 2011, Honolulu, HI, United States
Note

QC 20140827

Available from: 2014-08-27 Created: 2014-08-11 Last updated: 2016-09-02Bibliographically approved

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Efraimsson, Gunilla

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