Safety boundary of flow channel partial blockage in plate-type fuel assembly

Ding Wenjie; Wang Shaohua; Gao Jiao; Guo Haibing; Ma Jimin; Liu Zhiyong

doi:10.11884/HPLPB202234.210508

Volume 34 Issue 5

Apr. 2022

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Ding Wenjie, Wang Shaohua, Gao Jiao, et al. Safety boundary of flow channel partial blockage in plate-type fuel assembly[J]. High Power Laser and Particle Beams, 2022, 34: 056003. doi: 10.11884/HPLPB202234.210508

Citation:

Ding Wenjie, Wang Shaohua, Gao Jiao, et al. Safety boundary of flow channel partial blockage in plate-type fuel assembly[J]. High Power Laser and Particle Beams, 2022, 34: 056003. doi: 10.11884/HPLPB202234.210508

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Safety boundary of flow channel partial blockage in plate-type fuel assembly

doi: 10.11884/HPLPB202234.210508

Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China

Received Date: 2021-11-22
Accepted Date: 2022-03-18
Rev Recd Date: 2022-03-04

Available Online: 2022-03-23

Publish Date: 2022-05-15

Abstract

Abstract

It is necessary to obtain the triggering boundaries of heat transfer deterioration by mastering the flow and heat transfer characteristics in plate-type fuel assembly with multiple channels blocked, to improve the operation safety of plate-type fuel reactors. Based on qualitative analysis, the flow channel partial blockage accidents can be divided into non-adjacent channel blockage accident and adjacent channel blockage accident for the standard fuel assembly of the typical plate-type fuel reactor JRR-3M. Furthermore, the simulations of the flow and heat transfer characteristics under the two types of accidents were carried out using the computational fluid dynamics software ANSYS Fluent. The simulation results show that local boiling will not occur in flow channels and the maximum fuel temperature will be lower than the allowable temperature when non-adjacent channels are completely blocked or the maximum blocking rate of adjacent channels is less than 35%. Therefore, the safety operation boundary of JRR-3M reactor under flow channel blockage accident can be determined.
- plate-type fuel assembly,
- partial blockage,
- safety boundary,
- numerical simulation,
- flow and heat transfer

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References(15)

References

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