Numerical study of multiple channel road vehicle underbody diffusers

B. Daryakenari, Shahrir Abdullah, Rozli Zulkifli, A. Shamsudeen

Research output: Contribution to journalArticle

Abstract

Since high speed automobiles become common nowadays, reducing the lift coefficient to enhance stability on the road is not just the concern of race cars anymore. Underbody diffusers are one of the well known devices for reducing lift force of the moving vehicle. First, the three dimensional flow over simple car model, namely Ahmed model was simulated. Flow pattern and the results for aerodynamic forces were in good agreement with experimental results. In addition, the same method was utilized to investigate the effect of diffuser and additional splitters on lift and drag coefficients of the models. The popular SST k-ω turbulence model was used to assess aerodynamic forces as well as pressure and velocity distribution. The study provides a good comparison between different amounts of end plates which makes it easier to decide the optimum model.

Original languageEnglish
Pages (from-to)583-587
Number of pages5
JournalInternational Review of Mechanical Engineering
Volume6
Issue number3
Publication statusPublished - 2012

Fingerprint

Aerodynamics
Racing automobiles
Drag coefficient
Velocity distribution
Turbulence models
Pressure distribution
Flow patterns
Automobiles
Railroad cars

Keywords

  • Aerodynamic
  • Diffuser
  • Drag
  • Lift

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Numerical study of multiple channel road vehicle underbody diffusers. / Daryakenari, B.; Abdullah, Shahrir; Zulkifli, Rozli; Shamsudeen, A.

In: International Review of Mechanical Engineering, Vol. 6, No. 3, 2012, p. 583-587.

Research output: Contribution to journalArticle

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