核电厂电缆温度预测改进模型  

Improvement of the Nuclear Power Plant Cable Temperature Prediction Model

作　　者：李璐 黄咸家[2] 毕昆 刘晓爽 罗夏[1] 姜羲[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,安徽合肥230027 [2]广州中国科学院工业技术研究院核电火灾安全联合实验室,广东广州511458 [3]深圳中广核工程设计有限公司,广东深圳518172

出　　处：《核科学与工程》2017年第6期955-962,共8页Nuclear Science and Engineering

摘　　要：区域模型软件CFAST(Consolidated Model of Fire Growth and Smoke Transport)是经过美国核管会检验和验证的五款可用于核电评估的火灾模拟软件之一。本文针对火灾条件下的电缆温升,考虑了电缆芯的材料热特性,提出了改进的电缆温度预测一维热传导模型。同时,针对ICPMP(International Collaborative Project to Evaluate Fire Models for Nuclear Power Plant Applications)标准实验5种火灾工况,通过该实验的数据对改进模型进行了验证,得到了其优于原模型结论。The predicted model for cable surface temperature in CFAST （Consolidated Model of Fire Growth and Smoke Transport）consider the cable as a homogenous cylinder, which lead to underestimate the temperature of the cable. A model was improved by assuming the cable have two parts, which are the homogenous cable outer jacket and inner conductor, respectively. By comparing the experimental results of the ICMFP（International Collaborative Project to Evaluate Fire Models for Nuclear Power Plant Applications）Benchmark Exercise # 5,it is found that the accuracy of the model is increased substantially. By incorporating the improved model, a realistic and accurate results are oredicted bv the CFAST.

关 键 词：核电厂火灾 电缆失效时间 电缆表面温度预测模型 区域模型数值模拟 

分 类 号：TL48[核科学技术—核技术及应用]