Mathematical modeling and computation of high-pressure steam condensation in a transonic flow

• FURUSAWA Takashi

  Department of Computer and Mathematical Sciences, Tohoku University

• YAMAMOTO Satoru

  Department of Computer and Mathematical Sciences, Tohoku University

抄録

Wet-steam flows under high-pressure conditions are numerically investigated using a newly derived condensation model that assumes a real gas and uses a real gas Equation of State (EOS). Under high-pressure conditions, the present condensation model calculates the critical radius of a water droplet that is larger than that of the conventional model. The results indicate that nucleation is initiated farther downstream in the nozzle and the nucleation rate is smaller. Wet-steam nozzle flows under high-pressure conditions are simulated and the results are compared with experimental results. The present model simulates the pressure increase due to the release of latent heat of condensation more accurately than the conventional method based on the ideal gas assumption. The results obtained are also in good agreement with the experimental results.

収録刊行物

• Journal of Fluid Science and Technology

  Journal of Fluid Science and Technology 12 (1), JFST0002-JFST0002, 2017

  一般社団法人 日本機械学会

キーワード

• Wet-steam nozzle flow
• Nonequilibrium condensation
• High pressure
• Real gas
• Numerical simulation

詳細情報

• CRID: 1390001205245219840
• NII論文ID: 130005302859
• DOI: 10.1299/jfst.2017jfst0002
• ISSN: 18805558
• Web Site: https://www.jstage.jst.go.jp/article/jfst/12/1/12_2017jfst0002/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可