Investigation on Characteristics of Resistance and Flow Distribution of 5×5 Annular Fuel Rod Bundle Channel under Pulsating Flow Condition

Li Jinyang; Ma Jun; Qiao Shouxu; Hao Sijia; Li Xupeng; Tan Sichao; Tian Ruifeng

doi:10.13832/j.jnpe.2023.06.0111

Volume 44 Issue 6

Dec. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(6): 111-118

Li Jinyang, Ma Jun, Qiao Shouxu, Hao Sijia, Li Xupeng, Tan Sichao, Tian Ruifeng. Investigation on Characteristics of Resistance and Flow Distribution of 5×5 Annular Fuel Rod Bundle Channel under Pulsating Flow Condition[J]. Nuclear Power Engineering, 2023, 44(6): 111-118. doi: 10.13832/j.jnpe.2023.06.0111

Citation:

Li Jinyang, Ma Jun, Qiao Shouxu, Hao Sijia, Li Xupeng, Tan Sichao, Tian Ruifeng. Investigation on Characteristics of Resistance and Flow Distribution of 5×5 Annular Fuel Rod Bundle Channel under Pulsating Flow Condition[J]. Nuclear Power Engineering, 2023, 44(6): 111-118. doi: 10.13832/j.jnpe.2023.06.0111

Citation:

Li Jinyang, Ma Jun, Qiao Shouxu, Hao Sijia, Li Xupeng, Tan Sichao, Tian Ruifeng. Investigation on Characteristics of Resistance and Flow Distribution of 5×5 Annular Fuel Rod Bundle Channel under Pulsating Flow Condition[J]. Nuclear Power Engineering, 2023, 44(6): 111-118. doi: 10.13832/j.jnpe.2023.06.0111

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Investigation on Characteristics of Resistance and Flow Distribution of 5×5 Annular Fuel Rod Bundle Channel under Pulsating Flow Condition

doi: 10.13832/j.jnpe.2023.06.0111

1.
Heilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment, Harbin Engineering University, Harbin, 150001, China
2.
Project Management Center, Naval Armament Department of PLAN, Beijing, 100071, China
3.
China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2022-11-21
Rev Recd Date: 2023-01-03

Available Online: 2023-12-11

Publish Date: 2023-12-15

Abstract

Abstract

Compared to the traditional solid rod bundle channel, the annular fuel bundle channel has the advantages of enhancing cooling capacity and improving power density, and its special geometry makes the resistance characteristics closely related to the flow distribution characteristics. Under the pulsating flow condition, the flow rate in the inner and outer channels of annular fuel fluctuates periodically, which affects the heat exchange efficiency of coolant and threatens the safety of nuclear reactor. In this paper, a model of 5×5 annular fuel rod bundle channel is established based on computational fluid dynamics (CFD) method, and simulation calculation is carried out under steady-state and pulsating flow conditions. The simulation is benchmarked with the experimental velocity field measured with PIV and the friction factors predicted by the empirical correlation, and the results show good agreement. The variation characteristics of the friction factors of the inner and outer channels versus the Reynolds number are analyzed. Under the steady-state condition, the flow distribution ratio (inner channel flow versus outer channel flow) of the annular fuel is inversely proportional to the pressure drop ratio. Under the pulsating flow condition, the periodically averaged flow distribution ratio is inversely proportional to the pulsating frequency and proportional to the pulsating amplitude.
- Annular fuel,
- Pulsating flow,
- Resistance characteristics,
- Flow distribution characteristics,
- Computational fluid dynamics(CFD)

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References(16)

References

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