高温气冷堆球床模拟研究

A SIMULATION OF THE PEBBLE BED REACTOR CORE IN HTR

本文描述了漏斗形高温气冷球床堆的模拟计算方法及数据转换情况,克服了原来VSOP程序系统只能将漏斗形堆芯等效成一个圆柱体的局限性,新的程序系统CHTRP可依照实验测得的球流速度曲线剖分几何网格层,对于不同尺寸的反应堆锥体都可进行模拟计算,并作了实例计算,取得了令人满意的结果,为高温堆物理设计和分析提供了有力的工具。

This paper describes the calculation method and data conversion for the simulation of pebble fuel elements' behaviour in the High Temperature gas cooled Reactor (HTR) with a funnel cavity at the bottom of the core. The newly developed program system can simulate the pebbles' flow behaviour in the reactor with low funnel cavity of different size by subdividing the reactor core into different layers according to the given flow pattern which is gained from the experimental research on test facilities, rather than simply treating the core as a cylinder core with the same volume of fuel elements in the old version VSOP. An example has been given with the satisfactory results. The new program system offers us an effective computer code for the physical design and analysis of HTR.