日本機械学会論文集 B編
Online ISSN : 1884-8346
Print ISSN : 0387-5016
大規模乱流場の特性の評価 : 第3報、乱流場のスケールと異方性について
蒔田 秀治岩崎 隆夫飯田 明由佐々 浩司
著者情報
ジャーナル フリー

54 巻 (1988) 497 号 p. 37-44

詳細
PDFをダウンロード (792K) 発行機関連絡先
抄録

Length scales were experimentally determined for an artificially induced turbulence field with large turbulent intensities. The longitudinal and lateral integral scales were much larger than the values for conventional grid turbulence; and Taylor's micro scale was almost the same. The streamwise growth-rates of the micro scales were in good agreement with the theoretical value for isotropic turbulence, but the growth-rates of the integral scales were smaller than the theoretical values. The degree of the axisymmetric anisotropy was evaluated on the basis of the Rotta's model. The process of the return to isotropy was gradually carried out towards downstream, and the values of the main diagonal components of the anisotropy tensor became almost unvaried for X/M > 60. The skewness factor was proved to be dependent upon the turbulent intensity.

著者関連情報
© 社団法人日本機械学会
前の記事 次の記事
feedback
Top