高速非定常水素噴流における混合気形成過程のLES解析(熱工学,内燃機関,動力など)

• 近藤 千尋

  京都大学エネルギー科学研究科

• 川那辺 洋

  京都大学エネルギー科学研究科

• 塩路 昌宏

  京都大学エネルギー科学研究科

書誌事項

タイトル別名

• LES Analysis of Mixture Formation in a High-Speed Unsteady Hydrogen-Jet(Thermal Engineering)
• 高速非定常水素噴流における混合気形成過程のLES解析
• コウソク ヒテイジョウ スイソ フンリュウ ニ オケル コンゴウキケイセイ カテイ ノ LES カイセキ

抄録

Mixing process in a high-speed unsteady hydrogen jet is investigated by using large eddy simulation (LES) with the pseudo nozzle concept at inlet boundary. The results show that a jet shape of LES is similar to that of visualization image and the development of jet is well described in various injection coditions. Furthermore, the effects of injection condition such as injection pressure and nozzle diameter on mixture formation are investigated. As a result, low-injection pressure and small nozzle diameter promote mixing quickly, because the core region become small. And the effect of jet-fluid on mixing process is also investigated. As a result, the volume of entrainment is less and mixing inside jet is suppressed in case of hydrogen compared with methane in the same injection condition, because the density of hydrogen is much lower than the ambient air so the flow motion which promotes mixing inside jet quickly decreases when the air is entrained.

収録刊行物

• 日本機械学会論文集Ｂ編

  日本機械学会論文集Ｂ編 75 (754), 1344-1350, 2009

  一般社団法人 日本機械学会

キーワード

• Jet
• Turbulent Mixing
• Unsteady Flow
• Hydrogen
• Large Eddy Simulation

詳細情報

• CRID: 1390282681237373952
• NII論文ID: 110007331332
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.75.754_1344
• ISSN: 18848346
• ISSN: 03875016
• ISSN: http://id.crossref.org/issn/03875016
• NDL書誌ID: 10360814
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10360814
• Web Site: https://www.jstage.jst.go.jp/article/kikaib1979/75/754/75_KJ00005623545/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可