The Advanced Multilevel Predictor-Corrector Quasi-Static Method for Pin-Resolved Neutron Kinetics Simulation
نویسندگان
چکیده
The Advanced Multilevel Predictor-Corrector Quasi-static Method (AML-PCQM) is proposed in this work. four computational levels, including transport, Multi-Group (MG) Coarse Mesh Finite Difference (CMFD), One-Group (1G) CMFD, and Exact Point-Kinetics Equation (EPKE), are coupled with a new dynamic iteration strategy. In each coupling algorithm, the original Transient Fixed Source Problem (TFSP) solved predictor process using coarse time step, then flux distribution factorized to functions of amplitude shape next corrector process. Finally, multiple fine steps used adjust predicted solution. Two heterogeneous single assembly problems prompt control rod withdrawal event verify AML-PCQM scheme’s accuracy efficiency. numerical results obtained by different cases compared analyzed. final indicate that performs remarkable advantages efficiency reference cases.
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ژورنال
عنوان ژورنال: Frontiers in Energy Research
سال: 2021
ISSN: ['2296-598X']
DOI: https://doi.org/10.3389/fenrg.2021.747148