反应堆吊篮流致随机响应理论分析  

Theoretical Analysis on Flow-Induced Random Responses of Core Barrel of Nuclear Reactors

作　　者：杨翊仁[1] 鲁丽[1] 谭晓惠[1] 

机构地区：[1]西南交通大学应用力学与工程系,四川成都610031

出　　处：《西南交通大学学报》2001年第6期557-560,共4页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金 (No :19872 0 5 8) ;高等学校骨干教师资助计划及四川省应用基础基金资助项目

摘　　要：讨论了吊篮结构流致振动的均方根响应。通过将流体力划分为简谐振动流体力和脉动流体力两部分 ,结合结构有限元离散技术 ,建立了吊篮结构的流致随机响应不依赖于流体压力实验数据的纯理论分析方法。着重考查了平均流速、湍流强度及湍流尺度等几个主要参数对结构均方根值的影响。The random responses of core barrel of a nuclear reactor excited by a fluctuating flow are discussed in this paper. Fluid dynamic forces are divided into two parts, free vibrating fluid dynamics and fluctuating fluid dynamics. By means of finite element method of structure, a theoretic method is developed to analyze the root of mean square of responses of a core barrel structure in turbulence. It is the focal point to analyze the effects of the mean velocity, the strength of turbulence and the integral measure of turbulence on the root of mean square of structure response.

关 键 词：核反应堆 流体力学 随机响应 流致振动 吊篮结构 简谐振动流体力 脉动流体力 

分 类 号：TL334[核科学技术—核技术及应用]