日本機械学会論文集 B編
Online ISSN : 1884-8346
Print ISSN : 0387-5016
軸対称異方性乱流場の実験的解析 : 第2報,軸対称乱流場の渦スケールと乱流レイノルズ数について
蒔田 秀治岩崎 隆夫飯田 明由
著者情報
ジャーナル フリー

55 巻 (1989) 516 号 p. 2221-2229

詳細
PDFをダウンロード (901K) 発行機関連絡先
抄録

An axisymmetric turbulence field was generated behind honeycomb grids in a wind-tunnel test section. Integral and microscales were experimentally determined and their streamwise evolution was inspected. The aspect of the evolution differed from that of the quasi-isotropic turbulence, because it was influenced by the energy exchange between the spectral components of velocity fluctuations. The turbulence Reynolds numbers based on the integral scales became regardless of the degree of the anisotropy if the length scale was taken as the geometrical mean of the longitudinal and lateral integral scales. The turbulence Reynolds number based on the equivalent microscale was not free from the effect of the streamwise deformation of the spectra. These facts issue a warning to the easy application of the 'local-isotropy concept' on the anisotropic turbulence.

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