超音速ノズルからの適正膨張乱流噴流の時間平均特性 Mean-Flow Characteristics of Correctly Expanded Supersonic Turbulent Jets from Supersonic Nozzles

この論文にアクセスする

この論文をさがす

著者

抄録

Pitot impact pressure measurements on the correctly expanded supersonic jet from the axisymmetric nozzle have been performed along the jet centerline and radial direction. The test nozzle was designed by the characteristic method. Also, the flow visualizations have been performed with the three nozzles (these are bell and conical types, and another one is designed by the characteristics method). The design Mach number of these nozzles is 2.4, and the Reynolds number on the correctly expanded condition is 3.5× 106. The total temperature of the jets is equal to the room condition, so we considered only the flow of the cold jet on the effect of temperature. In the present study, the aims are to obtain more knowledge of the mean-flow characteristics and investigate the effect of the nozzle geometry on the correctly expanded supersonic jets. The results are as follows. The progress empirical formulae on the potential core length xcore/De, the spreading rate δη and the spreading parameter σ were proposed by the investigation of present and previous experimental results, respectively. These parameters are important on the understanding of mean-flow characteristics of the correctly expanded supersonic jets. And the flow visualizations showed that the configurations of supersonic jets from these nozzles were different due to the nozzle geometry, even though the pressure ratios on the nozzles are same condition.

収録刊行物

  • 日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences  

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences 56(651), 179-185, 2008-04-05 

    一般社団法人 日本航空宇宙学会

参考文献:  25件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021153053
  • NII書誌ID(NCID)
    AA11307372
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13446460
  • NDL 記事登録ID
    9481664
  • NDL 雑誌分類
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL 請求記号
    Z74-B503
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ