Software Verification for LOCUST-SIM Based on HPR1000 Verification Simulator

Tang Junming; Huang Zesong; Zhou Shuyong; Xu Caihong; Guo Hua; Zheng Wei; Gao Wei

doi:10.13832/j.jnpe.2025.S1.0200

Volume 46 Issue S1

Jul. 2025

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Article Navigation > Nuclear Power Engineering > 2025 > 46(S1): 200-206

Tang Junming, Huang Zesong, Zhou Shuyong, Xu Caihong, Guo Hua, Zheng Wei, Gao Wei. Software Verification for LOCUST-SIM Based on HPR1000 Verification Simulator[J]. Nuclear Power Engineering, 2025, 46(S1): 200-206. doi: 10.13832/j.jnpe.2025.S1.0200

Citation:

Tang Junming, Huang Zesong, Zhou Shuyong, Xu Caihong, Guo Hua, Zheng Wei, Gao Wei. Software Verification for LOCUST-SIM Based on HPR1000 Verification Simulator[J]. Nuclear Power Engineering, 2025, 46(S1): 200-206. doi: 10.13832/j.jnpe.2025.S1.0200

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Software Verification for LOCUST-SIM Based on HPR1000 Verification Simulator

doi: 10.13832/j.jnpe.2025.S1.0200

1.
China Nuclear Power (Shanghai) Simulation Technology Co., Ltd., Shanghai, 200241, China
2.
China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen, Guangdong, 518026, China

Received Date: 2025-01-15
Rev Recd Date: 2025-03-27
Publish Date: 2025-06-15

Abstract

Abstract

LOCUST-SIM is an advanced thermo-hydraulic simulation code specifically developed by China General Nuclear Power Group (CGN) for PWR. In this paper, thread pool is used to optimize the calculation process of LOCUST-SIM, and the verification of the software is carried out on the HPR1000 verification simulator to evaluate its accuracy and reliability in the simulation of thermal hydraulic characteristics of nuclear power plants, so as to improve the computational efficiency of the software. The HPR1000 verification simulator was built by using the LOCUST-SIM to simulate the thermal hydraulic model and using the the simulation platform software GENUS with its integrated flow network analysis code and instrumentation & control simulation tools to simulate the process systems and control logic. The transient simulation results of three types of reactor accidents were compared and verified in depth with the results from internationally recognized thermal hydraulic simulation code RELAP5-3D. The verification results indicate that LOCUST-SIM can accurately predict the thermal-hydraulic characteristics while significantly improving computational speed, meeting the requirements for reactor thermal-hydraulic simulation applications.
- HPR1000,
- Thermo-hydraulic simulation,
- Thread Pool,
- LOCUST-SIM,
- Software verification

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References(5)

References

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