分类： 物理学 >> 核物理学 提交时间： 2025-05-09
Li, Mr. Jun
Chen, Dr. GuoHua
Zhang, Prof. Qian
Zheng, Mr. RuoHan
Zhang, Miss LiQin
Zhang, Prof. Shaohong
摘要： The BEAVRS (Benchmark for Evaluation and Validation of Reactor Simulation) benchmark proposed by the Massachusetts Institute of Technology (MIT) computational reactor physics group is widely used by various institutions in the world to verify and validate their new generation direct whole core calculation codes. It enables analysts to develop an extremely detailed PWR core model and to carry out multi-physics coupled verification and validation for the reactor core analysis code. Although there are numerous publications in the literature reporting the validation results, few publish thorough validation results against all the measurement data of the problem. In this paper, the BEAVRS benchmark is solved using the CRANE code, which is a GPU-based deterministic direct whole core calculation code for PWR. It is demonstrated that direct whole core calculation with detailed core model can be performed on a mini server mounted with 10 consumer-grade RTX 3090 graphics cards, and the average time needed to complete neutronics and thermal-hydraulics coupled analysis for a single core state can be shortened to a record-breaking about one minute. Thorough verification and validation against all the measurement data shows that the predicted criticality, control rod bank worths, in-core detector signal distribution and the boron let-down curves of two cycles agree well with the measurements. These results indicate that even by exploiting the computing power of today's consumer-grade GPUs, direct whole core calculations with detailed core model for large commercial PWRs are now feasible, and CRANE is ready for PWR practical applications in terms of both solution fidelity and speed performance.
分类： 物理学 >> 核物理学 提交时间： 2025-02-09
Li, Mr. Jun
Chen, Dr. GuoHua
Zhang, Prof. Qian
Zheng, Mr. RuoHan
Zhang, Miss LiQin
Zhang, Prof. Shaohong
摘要： The BEAVRS (Benchmark for Evaluation and Validation of Reactor Simulation) benchmark problem proposed by the Massachusetts Institute of Technology (MIT) computational reactor physics group is widely used by various institutions in the world to verify and validate their new generation direct whole core calculation codes. It enables analysts to develop an extremely detailed PWR core model, and carry out multi-physics coupled verification and validation for the reactor core analysis code. Although there are numerous publications in the literature reporting the validation results, few publishes a thorough validation results against all the measurement data of the problem. In this paper, the BEAVRS problem is solved using the CRANE code, which is a fully GPU-based deterministic direct whole core calculation code for PWR. It is demonstrated that direct whole core calculation with detailed core model can be performed on a mini server mounted with 10 consumer-grade RTX 3090 graphics cards, and the average time needed to complete neutronics and thermal hydraulics coupled analysis for single core state point is just one minute. Thorough verification and validation against all the measurement data shows that the predicted criticality, control rod bank worths, in-core detector signal distribution and the boron let-down curves of two cycles agree well with the measurements. These results indicate that even by exploiting the computing power of consumer-grade GPUs, direct whole core calculations with detailed core model for large commercial PWRs are now practically possible, and CRANE is ready for PWR practical engineering applications in terms of both solution fidelity and speed performance.
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