失水事故中反应堆堆芯再淹没数学模型

发布时间：2018-05-29 11:58

  本文选题：压水堆 + 失水事故　； 参考：《核科学与工程》1999年01期

【摘要】：在分析和比较前人现有工作的基础上，提出了一个新的失水事故后堆芯底部再淹没过程的再润湿模型。本模型分别采用了考虑夹带的两流体方程和二维导热方程来描述两相流热工水力特性和壁面导热特性。这个模型的特点是定义了一个聚冷前沿附近的过渡区传热，，从而回避了采用至今仍很容易混淆的骤冷温度、淬火温度和Ｌｅｉｄｅｎｆｒｏｓｔ温度，便于工程应用。在经过进一步验证之后，该模型将补充到ＴＲＡＣ程序中，扩充其预测能力。
[Abstract]:Based on the analysis and comparison of the previous work, a new rewetting model for the reflooding process of the core bottom after a loss of water accident is proposed. In this model, two fluid equations with entrainment and two dimensional heat conduction equations are used to describe the thermohydraulic and wall thermal conductivity of two-phase flow respectively. This model is characterized by the definition of heat transfer in a transition zone near the condensation front, thus avoiding the use of quenching temperature, quenching temperature and Leidenfrost temperature, which are still easily confused up to now, which is convenient for engineering application. After further verification, the model will be added to the TRAC program to expand its prediction ability.
【作者单位】： 西安交通大学核能与热能工程系 日本京都大学反应堆研究所
【分类号】：O141.4,O141.4


本文编号：1950801