Full Content is available to subscribers

Subscribe/Learn More  >

Structure and Erosion Characteristics of Underexpanded Inert-Gas Jets Impinging on a Single Cylinder Submerged in Liquid Sodium

[+] Author Affiliations
Hideyuki Kudoh, Ken-ichiro Sugiyama, Tadashi Narabayashi

Hokkaido University, Sapporo, Japan

Hiroyuki Ohshima

Japan Atomic Energy Agency, Tokyo, Japan

Akikazu Kurihara

Japan Atomic Energy Agency, O-arai, Ibaraki, Japan

Paper No. ICONE21-16068, pp. V002T05A033; 7 pages
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 2: Plant Systems, Construction, Structures and Components; Next Generation Reactors and Advanced Reactors
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5579-9
  • Copyright © 2013 by ASME


When a heat transfer tube wall in a steam generator of a sodium-cooled fast reactor fails, high-pressure steam leaks into low-pressure liquid sodium side. Then the chemical reaction between steam and liquid sodium causes the erosive and corrosive reaction jet, and the secondary failure of a neighboring heat transfer tube is expected. The objectives of the present experimental study are to understand the structure of an underexpanded impinging gas jet which is injected into liquid sodium and to grasp a relationship between the gas jet velocity and the erosion characteristics of liquid sodium droplets which are entrained into the gas jet.

In the present study, the structure of an underexpanded inert gas jet impinging on a single cylinder within liquid sodium was clarified using the visualization method, which has been constructed by the authors. Then the erosion tests were carried out at the most erosive geometry, which was confirmed by the visualization experiments.

From the visualization, the underexpanded impinging gas jet in liquid sodium could be classified into four regions: core region, droplet flow region, liquid film flow region, and separation region. The erosion phenomenon on the cylinder surface was observed only when the droplet flow region was impinged. In this region, the liquid droplet impingement type erosion was confirmed. The erosion rate, the ratio of the volume loss of specimens to the duration time, was correlated as the function of the gas jet velocity at the end of the external expansion region.

Copyright © 2013 by ASME
Topics: Jets , Erosion , Cylinders , Sodium



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In