Study on void distribution of a rod bundle with a non-uniform rod gap

Miyuki Akiba, Shinichi Morooka, Kenetsu Shirakawa

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

Abstract

Void distribution measurements were performed to clarify the void behaviour phenomena in a rod bundle with a nonuniform rod gap. An X-ray computed tomography scanner was applied for the void distribution measurement in the rod bundle. The test results show that the void concentrates on the wider subchannel due to void drift and the void distribution becomes flatter with increasing quality. The vapour velocity at the wide subchannel becomes larger and the slip ratio between vapour and liquid increases compared with a uniform rod gap. Therefore, the average void fraction of the bundle is reduced.

Original languageEnglish
Title of host publication4th World Congress in Industrial Process Tomography
PublisherInternational Society for Industrial Process Tomography
Pages273-278
Number of pages6
ISBN (Print)9780853163206
Publication statusPublished - 2005
Externally publishedYes
Event4th World Congress in Industrial Process Tomography - Aizu
Duration: 2005 Sep 52005 Sep 5

Other

Other4th World Congress in Industrial Process Tomography
CityAizu
Period05/9/505/9/5

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Keywords

  • BWR fuel assembly
  • Non-uniform rod gap
  • Void drift
  • X-ray CT scanner

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computational Mechanics
  • Computer Vision and Pattern Recognition
  • Computer Science Applications

Cite this

Akiba, M., Morooka, S., & Shirakawa, K. (2005). Study on void distribution of a rod bundle with a non-uniform rod gap. In 4th World Congress in Industrial Process Tomography (pp. 273-278). International Society for Industrial Process Tomography.