流体工学部門講演会講演論文集
Online ISSN : 2424-2896
セッションID: 0220
会議情報

直列に配置された円形ノズルから流出する乱流自由噴流(平均速度場)
世良 武士藤田 重隆張間 貴史
著者情報
会議録・要旨集 フリー

詳細
抄録

The mean flow properties of the multiple circular jets issuing from circular nozzles in a line were investigated experimentally. The aim of this study is to clarify an effect of the arrangement pitch of the circular nozzles on the mixing and the development processes of the jets. In this study, the nozzle arrangement pitch (S/d) was set to 4.2, 2.8 and 1.4. S/d indicates a nozzle arrangement pitch which is normalized with nozzle diameter d. Reynolds number was kept constant at 25000 throughout the present experiment. The experiments were made using an X-type hot wire probe and the linearized constant temperature anemometers to measure the longitudinal mean velocity. From this experiment, it is revealed that the section of which Uox/Ue on the x axis shows the decreasing rate of the two dimensional jet (Uox ∝ (x/d) -0.5), moves toward the upstream region as decreasing with S/d.

著者関連情報
© 2016 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top