One-dimensional numerical simulation of cavitation surge in pumping system considering cavity response delay

S. Watanabe, Y. Tsujimoto

研究成果: Contribution to journalConference article査読

抄録

Cavitation instabilities such as rotating cavitation and cavitation surge often occur in high speed turbopumps. In the present study, numerical simulation of cavitation surge, which numerically solves the one-dimensional momentum and continuity equations with modelled dynamic cavitation characteristics, is conducted. The phase lag of cavity response against the inlet pressure and the suction flow rate variations is modeled in the form of the first-order lag system considering that the frequency of cavitation surge is small. Differently from linear stability analysis made in our previous study, the equations are solved in time domain with retaining some of non-linear terms. The method is validated through the comparison with the stability analysis. Then the effect of phase lags in dynamic cavitation characteristics is examined.

本文言語英語
論文番号012053
ジャーナルIOP Conference Series: Earth and Environmental Science
774
1
DOI
出版ステータス出版済み - 6 15 2021
イベント30th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2020 - Lausanne, Virtual, スイス
継続期間: 3 21 20213 26 2021

All Science Journal Classification (ASJC) codes

  • 環境科学(全般)
  • 地球惑星科学(全般)

フィンガープリント

「One-dimensional numerical simulation of cavitation surge in pumping system considering cavity response delay」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル