並列タイトル等Statistical properties of turbulent jets developed from turbulent pipe flows
タイトル(掲載誌)独立行政法人航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-59
一般注記The turbulence characteristics of air jets issuing from the exit of turbulent duct and pipe flows were investigated using hot wire anemometry. The statistics of turbulence that include turbulence intensity, skewness factor and flatness factor show that the strong entrainment that bring the surrounding fluid at rest into the jet around the early development of the jet and these values saturate to the general turbulence values downstream. The velocity correlations show apparent negative values that suggest certain large scale of the turbulence both in time and the spanwise direction. Though the spectra never indicate any specific peaks, this result suggests that the jet flows from the turbulent duct or pipe flows have a large coherent structure at least in the region close to the jet exit.
資料番号: NALSP0059017
レポート番号: NAL SP-59
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43589&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ