日本機械学会関東支部総会講演会講演論文集
Online ISSN : 2424-2691
ISSN-L : 2424-2691
会議情報
1113 加熱リブレット面上に発達した流れ場の乱流特性
角田 和巳鈴木 直亮
著者情報
会議録・要旨集 フリー

p. 515-516

詳細
抄録
Experimental studies of turbulent flowfields developing over a heated riblet surface were carried out in a low-speed wind tunnel. A paritcle image velocimetry was used to measure the instantaneous velocity field. In the present study, it was found that the skin friction coefficient over a heated riblet surface reached up to about 13%. The mean-velocity profile in the law of the wall coordinate was shifted upward, which fact suggested a reduction in turbulence production in the near-wall region. This phenomenon was also shown by the characteristics of turbulence intensities observed over the riblet surface. Furthermore, instantaneous velocity vector map indicates that a perturbation of the spanwise veclocity component was restricted near the riblet surface.
著者関連情報
© 2002 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top