自然循环ONB点灰色理论建模研究  

Study on Grey Model in ONB of Nature Circulation

作　　者：周涛[1] 杨瑞昌[1] 覃世伟[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《核动力工程》2005年第2期121-124,157,共5页Nuclear Power Engineering

基　　金：国家博士后基金项目资助(2003034126)

摘　　要：运用灰色系统理论对以氟利昂为工质的自然循环过冷沸腾起始点实验结果进行分析。结果表明,在自然循环中对ONB点起作用因素的大小顺序依次为:加热功率、进口干度、流体温度、流量和压力等。基于实验结果,运用灰色系统理论,建立了GM(1,1)模型和GM(1,4)模型。利用GM(1,1)模型可以得出热功率对ONB点位置的影响。利用GM(1,4)模型得出热功率、进口干度、流体进口温度、流量等因素对ONB点位置的影响。两类模型都可以对实验数据的发展趋势进行预测。Grey system theory is applied to analyze the experimental data of onset of nuclear boiling in Freon natural circulation. The magnitude sequence of the factors that have effects on ONB (Onset of Nucleate Boiling) of nature circulation are confirmed as the heating power, inlet quality, liquid temperature, mass flow and pressure. Based on the experimental results, Grey model GM(1,1) and GM(1,4) are established by using the grey theory. The effects of the heating power, inlet quality, liquid inlet temperature and flow on the position of ONB are analyzed by using GM(1,1). Both models can be used to predict the development trend of the experimental data.

关 键 词：自然循环 过冷沸腾起始点 灰色系统理论 

分 类 号：TL364[核科学技术—核技术及应用]