Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Experimental investigation of the flow around a simplified ground vehicle under effects of the steady crosswind
Adana Science and Technology University, Faculty of Engineering, Department of Mechanical Engineering, Adana 01180, Turkey.ORCID iD: 0000-0001-5994-4565
2018 (English)In: International Journal of Heat and Fluid Flow, ISSN 0142-727X, Vol. 71, p. 137-152Article in journal (Refereed) Published
Abstract [en]

Crosswinds which stem from on-road flow conditions can deteriorate a ground vehicle's driving performance. In spite of the numerous studies investigating aerodynamics of the ground vehicles in the previous literature, there is still a need for thorough understanding of the underlying flow phenomena related to crosswind sensitivity of the ground vehicles. Therefore, the present study is aimed to investigate characteristics of the flow features around the ground vehicles under steady crosswind conditions within a range of yaw angles 0 degrees <= beta <= 15 degrees using the Ahmed vehicle model with rear slant angles of alpha = 25 degrees and 35 degrees. Throughout the investigations, flow visualizations using dye injection technique and velocity measurements using particle image velocimetry PIV technique are conducted. The Reynolds number of the flow which is based on the free stream flow velocity U = 200 mm/s and height of the model H = 72 mm is Re-H = 1.4 x 10(4). Results are presented in terms of time averaged vorticity <omega> contours and streamline <Psi> patterns together with velocity magnitude ((< u >(2)+ < w >(2))(1/2)/U) of the flow fields. Additionally, turbulence quantities such as Reynolds stresses < u'w' >/U-2 and turbulent kinetic energy TKE are presented and discussed in details. Results of the present study show that characteristics of the flow features in the near wake region downstream of the Ahmed model are very sensitive to the effects of the crosswind.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 71, p. 137-152
Keywords [en]
Ahmed vehicle model, Ground vehicle aerodynamics, Ply, Steady crosswind, Yaw angle
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-233580DOI: 10.1016/j.ijheatfluidflow.2018.03.020ISI: 000435428900011Scopus ID: 2-s2.0-85044985949OAI: oai:DiVA.org:kth-233580DiVA, id: diva2:1241904
Note

QC 20180827

Available from: 2018-08-26 Created: 2018-08-26 Last updated: 2019-09-20Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Tural, Tunay

Search in DiVA

By author/editor
Tural, Tunay
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 100 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf