Drag characteristics of a pickup truck according to the bed geometry

Jongsoo Ha, Shigeru Obayashi, Yasuaki Kohama

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The bed of a pickup truck is the most important part for the aerodynamic performance. The drag characteristics of the pickup truck were examined experimentally according to the bed geometry which was the variation of the bed length and the bed height with three levels. The experiments were conducted at the low turbulence wind tunnel of the close type. The mean drag coefficients of the model were measured by a load cell varying in the yaw angle up to fifteen degrees. The flow field around the tailgate was visualized by the PIV (Particle Image Velocimetry) method and the surface flow on the upper part of the tailgate and sidewalls were visualized by the oil-paint method. The drag coefficients distribution was ascent or descent tendency according to the bed geometry, which showed that the bed length and the bed height were related closely to the flow characteristics. The bed height was the dominant factor for the short bed, while the reverse flow in wake was dominant for the long bed. The occurrence and the size of the reverse flow in wake are dependent upon the bed geometry. For the low drag pickup truck, the recirculating flow inside the bed and the reverse flow in wake should be considered at the same time.

本文言語English
ホスト出版物のタイトルProceedings of the 7th IASME / WSEAS International Conference on Fluid Mechanics and Aerodynamics, FMA '09
ページ122-127
ページ数6
出版ステータスPublished - 2009 12月 1
イベント7th IASME / WSEAS International Conference on Fluid Mechanics and Aerodynamics, FMA '09 - Moscow, Russian Federation
継続期間: 2009 8月 202009 8月 22

出版物シリーズ

名前Proceedings of the 7th IASME / WSEAS International Conference on Fluid Mechanics and Aerodynamics, FMA '09

Other

Other7th IASME / WSEAS International Conference on Fluid Mechanics and Aerodynamics, FMA '09
国/地域Russian Federation
CityMoscow
Period09/8/2009/8/22

ASJC Scopus subject areas

  • 流体および伝熱
  • 機械工学

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