Research on the Influence of Scaling Ratio on the Integral Hydraulic Characteristics of Reactor

Peng Fan; Lu Donghua; Xie Chong; Wang Chunyu; Gu Hanyang; Hong Rongkun; Su Qianhua

doi:10.13832/j.jnpe.2024.070067

Volume 46 Issue 4

Aug. 2025

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Peng Fan, Lu Donghua, Xie Chong, Wang Chunyu, Gu Hanyang, Hong Rongkun, Su Qianhua. Research on the Influence of Scaling Ratio on the Integral Hydraulic Characteristics of Reactor[J]. Nuclear Power Engineering, 2025, 46(4): 68-75. doi: 10.13832/j.jnpe.2024.070067

Citation:

Peng Fan, Lu Donghua, Xie Chong, Wang Chunyu, Gu Hanyang, Hong Rongkun, Su Qianhua. Research on the Influence of Scaling Ratio on the Integral Hydraulic Characteristics of Reactor[J]. Nuclear Power Engineering, 2025, 46(4): 68-75. doi: 10.13832/j.jnpe.2024.070067

Citation:

Peng Fan, Lu Donghua, Xie Chong, Wang Chunyu, Gu Hanyang, Hong Rongkun, Su Qianhua. Research on the Influence of Scaling Ratio on the Integral Hydraulic Characteristics of Reactor[J]. Nuclear Power Engineering, 2025, 46(4): 68-75. doi: 10.13832/j.jnpe.2024.070067

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Research on the Influence of Scaling Ratio on the Integral Hydraulic Characteristics of Reactor

doi: 10.13832/j.jnpe.2024.070067

1.
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
2.
China Nuclear Power Technology Research Institute Co.,Ltd., Shenzhen, Guangdong, 518026, China

Received Date: 2024-07-31
Rev Recd Date: 2024-11-21
Publish Date: 2025-08-15

Abstract

Abstract

In order to study the influence of scaling ratio on the integral hydraulic characteristics of the reactor, 1∶1, 3∶5, and 1∶5 scaled mock-ups are designed based on geometric similarity and Euler number similarity, and flow distribution test, lower plenum mixing characteristics test and lower plenum flow field tests are conducted on three scaled mock-ups at a velocity of reactor prototype in this paper. The comparative results reveal the flows in 1∶1, 3∶5, and 1∶5 scaled mock-ups have entered self-simulation region and the flow fields are similar to each other. The scaling ratio has little influence on the flow distribution factors, mixing coefficients and flow fields in lower plenum at inlet of reactor core. Specifically, the difference in flow distribution factors between different scaling ratio mock-ups is less than 0.02, and the difference in mixing coefficients is less than 0.1. This study can provide a basis for evaluating the distortion of hydraulic modeling method, as well as a reference for reactor thermal hydraulic design and experimental research.
- Scaling ratio,
- Flow distribution,
- Mixing,
- Flow field

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References(19)

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