Numerical Analysis of Cavitating Flow of Liquid Helium in a Converging-Diverging Nozzle

Jun Ishimoto, Kenjiro Kamijo

研究成果: Article査読

11 被引用数 (Scopus)

抄録

The fundamental characteristics of the two-dimensional cavitating flow of liquid helium through a horizontal converging-diverging nozzle near the lambda point are numerically investigated to realize the further development and high performance of new multiphase superfluid cooling systems. First, the governing equations of the cavitating flow of liquid helium based on the unsteady thermal nonequilibrium multifluid model with generalized curvilinear coordinates system are presented, and several flow characteristics are numerically calculated, taking into account the effect of superfluidity. Based on the numerical results, the two-dimensional structure of the cavitating flow of liquid helium though a horizontal converging-diverging nozzle is shown in detail, and it is also found that the generation of superfluid counterflow against normal fluid flow based on the thermomechanical effect is conspicuous in the large gas phase volume fraction region where the liquid to gas phase change actively occurs. Furthermore, it is clarified that the mechanism of the He I to He II phase transition, caused by the temperature decrease is due to the deprivation of latent heat for vaporization from the liquid phase.

本文言語English
ページ(範囲)749-757
ページ数9
ジャーナルJournal of Fluids Engineering, Transactions of the ASME
125
5
DOI
出版ステータスPublished - 2003 9月 1
外部発表はい

ASJC Scopus subject areas

  • 機械工学

フィンガープリント

「Numerical Analysis of Cavitating Flow of Liquid Helium in a Converging-Diverging Nozzle」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