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

J. Ishimoto, K. Kamijo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The basic characteristics of the two-dimensional cavitating flow of liquid helium through a vertical converging-diverging nozzle near the lambda point are numerically investigated to realize the further development and high performance of new multiphase He II cooling systems. First, the governing equations of the cavitating flow of liquid helium based on the unsteady thermal nonequilibrium multi-fluid model with generalized curvilinear coordinates system are presented, and several multiphase 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 vertical 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.

Original languageEnglish
Title of host publicationAdvances in Cryogenic Engineering
Subtitle of host publicationTransactions of the Cryogenic Engineering Conference - CEC
EditorsJohn Pfotenhauer, Steven Van Sciver, Albert Zeller, Jonathan Demko, Christopher Rey, John G. Weisend II, John Barclay, Michael DiPirro, Quan-Sheng Shu, Peter Kittel, Edward Daly, John R. Hull, Jennifer Lock, Joseph Waynert, Susan Breon, James Maddocks, John Zbasnik, Patrick J. Kelley, Arkadiy Klebaner
PublisherAmerican Institute of Physics Inc.
Pages1060-1067
Number of pages8
ISBN (Electronic)0735401861
DOIs
Publication statusPublished - 2004 Jun 23
Externally publishedYes
Event2003 Cryogenic Engineering Conference, CEC 2003 - Anchorage, United States
Duration: 2003 Sep 222003 Sep 26

Publication series

NameAIP Conference Proceedings
Volume710
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2003 Cryogenic Engineering Conference, CEC 2003
CountryUnited States
CityAnchorage
Period03/9/2203/9/26

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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