On-road turbulence: Part 2

Scott Wordley, Jeff Saunders

Research output: Contribution to journalArticleResearchpeer-review

47 Citations (Scopus)


This work presents a second series of turbulence measurements made in a range of different on-road terrains and traffic conditions. Wind measurements were captured using a rake of four separate multi-hole pressure probes mounted to the front of a test vehicle traveling at a road speed of 100 km/h. Analysis of the data shows how the turbulence intensities and length scales are modified by terrain type, road side obstacles and the upstream wakes of other moving vehicles. A vertical 'profile' of turbulence near the ground is generated and spatial correlations between probes are examined. These on-road results are then compared to the turbulence levels generated by the Monash University wind tunnel. A new method and a series of targets are then proposed for improving the modeling of turbulence in automotive wind tunnels.

Original languageEnglish
Pages (from-to)111-137
Number of pages27
JournalSAE International Journal of Passenger Cars: Mechanical Systems
Issue number1
Publication statusPublished - 2009

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