1995年
スパン方向すきまをもつ粗さ要素を超える乱流境界層の組織構造(VITA法による解析)
日本機械学会論文集. B編
- ,
- ,
- 巻
- 61
- 号
- 590
- 開始ページ
- 3691
- 終了ページ
- 3698
- 記述言語
- 日本語
- 掲載種別
- DOI
- 10.1299/kikaib.61.3691
- 出版者・発行元
- 一般社団法人日本機械学会
Conditional averages of longitudinal and normal velocities and of their products have been obtained with the VITA analysis for a centerline development of a boundary layer flow through a gap in an isolated wall-mounted roughness element. All measurements were made for a ratio of roughness height to boundary layer thickness 0. 135 at a Reynolds Number of 3 300, based on obstacle height and free stream velocity. It is inferred that conditional averaged patterns and higher-order moments are significantly affected by the difference of gap size G. In particular, the gap width effect on the peak ratio, mean event frequency and mean consecutive time for both accelerating and decelerating events at X/G=0 is completely contrary to those at X/G=4. The higher-order moments show the reverse tendency at the Y/δ≒0. 14 border.
- リンク情報
- ID情報
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- DOI : 10.1299/kikaib.61.3691
- ISSN : 0387-5016
- ISSN : 1884-8346
- CiNii Articles ID : 110002394613
- CiNii Books ID : AN00187441