Numerical analysis of flow through a hole for modeling of wind tunnel porous wall

Taisuke Nambu*, Atsushi Hashimoto, Takashi Aoyama, Tetsuya Sato

*この研究の対応する著者

研究成果: Article査読

4 被引用数 (Scopus)

抄録

To model porous walls used in transonic wind tunnels, flow through a hole is investigated using Computational Fluid Dynamics (CFD). First, we analyze the relation between flow rate and differential pressure across the hole. At low differential pressures, such as for wind tunnel porous walls, the flow rate is found to increase linearly with differential pressure. We therefore propose a new model based on a linear relationship between flow rate and differential pressure. The effects of hole shape and boundary layer conditions near the hole are then investigated. In the outflow case (i.e., wind tunnel to plenum chamber), the flow rate increases as the ratio of hole depth to diameter becomes large due to variation of the flow separation area at the hole exit. Boundary layer thickness also affects the flow field: when the ratio of boundary layer thickness to hole diameter becomes small, the flow rate decreases, because the flow along wind tunnel side wall interacts more strongly with the flow through the hole.

本文言語English
ページ(範囲)221-228
ページ数8
ジャーナルTransactions of the Japan Society for Aeronautical and Space Sciences
54
185-186
DOI
出版ステータスPublished - 2011

ASJC Scopus subject areas

  • 航空宇宙工学
  • 宇宙惑星科学

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