Effect of Flow Blockage on the Coolability during Reflood in a 2 × 2 Rod Bundle
Joint Authors
Kim, Kihwan
Kim, Byung-Jae
Youn, Young-Jung
Choi, Hae-Seob
Moon, Sang-Ki
Song, Chul-Hwa
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-01
Country of Publication
Egypt
No. of Pages
9
Abstract EN
During the reflood phase of a large-break loss-of-coolant accident (LBLOCA) in a pressurized-water reactor (PWR), the fuel rods can be ballooned or rearranged owing to an increase in the temperature and internal pressure of the fuel rods.
In this study, an experimental study was performed to understand the thermal behavior and effect of the ballooned region on the coolability using a 2 × 2 rod bundle test facility.
The electrically heated rod bundle was used and the ballooning shape of the rods was simulated by superimposing hollow sleeves, which have a 90% blockage ratio.
Forced reflood tests were performed to examine the transient two-phase heat transfer behavior for different reflood rates and rod powers.
The droplet behaviors were also investigated by measuring the velocity and size of droplets near the blockage region.
The results showed that the heat transfer was enhanced in the downstream of the blockage region, owing to the reduced flow area of the subchannel, intensification of turbulence, and deposition of the droplet.
American Psychological Association (APA)
Kim, Kihwan& Kim, Byung-Jae& Youn, Young-Jung& Choi, Hae-Seob& Moon, Sang-Ki& Song, Chul-Hwa. 2014. Effect of Flow Blockage on the Coolability during Reflood in a 2 × 2 Rod Bundle. Science and Technology of Nuclear Installations،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1047735
Modern Language Association (MLA)
Kim, Kihwan…[et al.]. Effect of Flow Blockage on the Coolability during Reflood in a 2 × 2 Rod Bundle. Science and Technology of Nuclear Installations No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1047735
American Medical Association (AMA)
Kim, Kihwan& Kim, Byung-Jae& Youn, Young-Jung& Choi, Hae-Seob& Moon, Sang-Ki& Song, Chul-Hwa. Effect of Flow Blockage on the Coolability during Reflood in a 2 × 2 Rod Bundle. Science and Technology of Nuclear Installations. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1047735
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1047735