Verifications and applications of NECP-Bamboo2.0 for PWR whole-core multi-cycle pin-by-pin simulation

IF 3.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2024-09-24 DOI:10.1016/j.pnucene.2024.105447

Sicheng Wang, Yunzhao Li, Junwei Qin, Yilin Liang, Yuancheng Zhou, Liangzhi Cao, Hongchun Wu

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引用次数: 0

Abstract

In 2018, the NECP Laboratory at Xi'an Jiaotong University (XJTU) published the pin-by-pin two-step calculation code system NECP-Bamboo2.0 for the physics analysis of Pressurized Water Reactors (PWRs). Previously, NECP-Bamboo2.0 was primarily verified for its neutronics analysis capabilities. The code system has recently been enhanced for practical reactor physics analysis of commercial PWR cores. In this paper, several modifications of NECP-Bamboo2.0 regarding its improvement in functionality are introduced. Then, the pin-by-pin calculation capability of the code system was verified using the 2D and 3D VERA benchmark problems. Comparisons with reference solutions provided by high-fidelity codes demonstrated the computational accuracy of NECP-Bamboo2.0. Additionally, NECP-Bamboo2.0 was applied to the multi-cycle physics analysis of two commercial PWR cores, CNP300 and CNP1000. Comparisons with the measurements regarding the startup physics tests and the depletion processes illustrate the reliability of NECP-Bamboo2.0 in practical pin-by-pin reactor physics analysis and highlight the improvements of the pin-by-pin method over the assembly-homogenized coarse-mesh diffusion method.

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NECP-Bamboo2.0 在 PWR 整核多周期逐引脚仿真中的验证和应用

2018年，西安交通大学NECP实验室发布了用于压水堆物理分析的逐针两步计算代码系统NECP-Bamboo2.0。此前，NECP-Bamboo2.0 主要验证了其中子分析能力。最近，该代码系统针对商用压水堆堆芯的实际反应堆物理分析进行了增强。本文介绍了NECP-Bamboo2.0在功能改进方面的几处修改。然后，使用二维和三维 VERA 基准问题验证了代码系统的逐针计算能力。通过与高保真代码提供的参考解进行比较，证明了NECP-Bamboo2.0的计算精度。此外，NECP-Bamboo2.0还应用于CNP300和CNP1000两个商用压水堆堆芯的多周期物理分析。与有关启动物理试验和耗竭过程的测量结果的比较说明了NECP-Bamboo2.0在实际逐针反应堆物理分析中的可靠性，并突出了逐针方法与装配均质化粗网格扩散方法相比的改进之处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.