HTR-PM堆芯出口热气混合实验相似性分析

球床模块式高温气冷堆核电站（HTR-PM）堆底设有热气混合结构,使堆芯流出的氦气混合均匀。堆芯出口热气混合实验用于测量和分析该混流结构的混合性能及其阻力特性。为使设计的热气混合实验系统及实验工况能反映HTR-PM的混流结构的实际混合性能和阻力特性,在确保实验经济成本的前提下,根据相似性准则,分析确定了堆芯出口热气混合实验系统的设计准则和具体参数,并利用Fluent软件对所设计的实验装置内的流场和温度分布进行了数值模拟。该混合实验系统及其工况与HTR-PM实际堆底混流结构具有相似性,在此实验的基础上,可通过理论分析和数值模拟得到HTR-PM实际堆底混流结构的混合性能和阻力特性。

Similarity Analysis for Hot Gas Mixing Experiment of Outlet of HTR-PM Reactor Core

A hot gas mixing structure was designed under the reactor core of high temperature reactor-pebble-bed module(HTR-PM) to get sufficient thermal mixing of helium coolant which comes from the reactor core.A hot gas mixing experiment of outlet of HTR-PM reactor core was proposed to measure and analyze the actual mixing performance and resistance property of this mixing structure.By considering economic cost of the experiment,the design criteria and parameters of the hot gas mixing experiment were determined acc...