Surface pressure and flow field behind an oscillating fence submerged in turbulent boundary layer

Manjinder Singh, Jonathan W. Naughton, Taro Yamashita, Hiroki Nagai, Keisuke Asai

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Phase-locked PSP and PIV measurements were used to study the evolution of three-dimensional disturbances produced by an oscillating fence actuator immersed in a zero pressure gradient turbulent boundary layer. For the single fence frequency studied, strong three-dimensionality is observed in the vortical structure that varies along the span of the fence soon after the fence enters the flow. At the midspan, the structure grows, weakens, and convects faster than at other locations. As the fence height increases, the data indicate that the vortical structure terminates near the edge of the fence. In contrast, the vortex structure terminates on the plate surface adjacent to the fence edge as the fence descends, similar to a wake vortex of a stationary obstacle. This study demonstrates that the combined use of surface and flow-field diagnostics provide a link between flow field and surface features, yielding an understanding of the flow that would have not been possible with any one technique.

本文言語English
ページ(範囲)701-714
ページ数14
ジャーナルExperiments in Fluids
50
3
DOI
出版ステータスPublished - 2011 3

ASJC Scopus subject areas

  • 計算力学
  • 材料力学
  • 物理学および天文学(全般)
  • 流体および伝熱

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