哈尔滨工程大学学报2024，Vol.45Issue(12)：2319-2325,7.DOI:10.11990/jheu.202310021
直流蒸汽发生器参数化降阶建模
Parametric reduced-order modeling of once-through steam generators
摘要
Abstract
The model order reduction technique is used in this study to develop a rapid calculation model for once-through steam generators(OTSGs)aiming at the immediacy and real-time requirements encountered by detailed simulation models in performing complex multi-simulation tasks,such as thermal-hydraulic design optimization and sensitivity analysis.High-dimensional full-order snapshots of the OTSG,obtained under various primary coolant in-let temperature conditions,are effectively reduced using the proper orthogonal decomposition method.This ap-proach yields a low-dimensional representation that accurately captures the thermal-hydraulic characteristics of the OTSG during load reduction transients.Furthermore,a framework for reduced-order modeling of the OTSG within a parameter domain is developed using double proper orthogonal decomposition and cubic spline interpolation.To val-idate the effectiveness of this framework,simulation results from the RELAP5 program are used to assess the ability of the parametric reduced-order model(ROM)to rapidly predict key thermal-hydraulic parameters of the OTSG un-der transient conditions.The evaluation results demonstrate that the maximum prediction error of the ROM is less than 1%,whereas the computational time required for the ROM is approximately 1%of that needed for RELAP5.Thus,this method has a substantial advantage in terms of computational accuracy and efficiency.关键词
双重本征正交分解/本征正交分解/参数化降阶建模/直流蒸汽发生器/模型降阶/快速计算/热工水力/RELAP5Key words
double proper orthogonal decomposition/proper orthogonal decomposition/parametric reduced-order modeling/once-through steam generator/model order reduction/fast calculation/thermal hydraulics/RELAP5分类
能源科技引用本文复制引用
许依凡,彭敏俊,夏庚磊..直流蒸汽发生器参数化降阶建模[J].哈尔滨工程大学学报,2024,45(12):2319-2325,7.基金项目
国家自然科学基金项目(12475171). （12475171）
