船用反应堆主冷却剂泵建模研究与仿真

本文依据船用反应堆主泵试验数据，绘制了基于RELAP5程序的主泵全特性曲线，利用建立的数学仿真模型对主泵启动特性、惰转特性、稳态运行工况、高低速切换工况的响应过程进行分析。结果表明：主泵模型能够实现相应的仿真功能，较为准确地反映主泵的运行特性；船用主泵对转动惯量的要求较高；模型适用于后续对反应堆系统不同响应的分析，并可为主泵的设计及优化提供参考。

Modeling research and simulation of main coolant pump for marine reactor

In this paper, full characteristic curvesbased on RELAP5 code were plotted according toexperimental dataof marine reactor main pump, then mathematic models were established to simulate and analyze a series of main pump operating behaviors, such as start-up characteristic, coastdown behavior, steady-state operation, and switch condition of high-and low-speed. The results indicate that the simulation functions of main pump model are achieved successfully, which reflect the operating characteristics of main pump accurately;the selectionof inertia for marine main pump is highly demanding;and the pump model is applicable to the subsequent analysis of various responses in nuclear reactor system, providing reference for main pump design and optimization.