| 摇摆条件下自然循环流动不稳定性的混沌特性研究 |
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| 引用本文： | 张文超,谭思超,高璞珍,张虹,张红岩.摇摆条件下自然循环流动不稳定性的混沌特性研究[J].原子能科学技术,2012,46(6):705-709. |
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| 作者姓名： | 张文超 谭思超 高璞珍 张虹 张红岩 |
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| 作者单位： | 1.哈尔滨工程大学 ;核安全与仿真技术国防重点学科实验室，黑龙江 ;哈尔滨150001；2.中国核动力研究设计院 ;核反应堆系统设计技术重点实验室，四川 ;成都610041；3海军装备部，北京100841 |
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| 基金项目： | 国家自然科学基金资助项目(50806014);中央高校基本科研业务费专项资金资助项目(HEUCFZ1008);核反应堆系统设计技术重点实验基金资助项目 |
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| 摘 要： | 对摇摆条件下两相自然循环系统不规则复合型脉动进行了非线性时序分析。通过相空间重构计算了不规则复合型脉动时间序列的关联维、K2熵和最大Lyapunov指数值，在几何不变量的计算结果基础上，结合密度波型脉动和波谷型脉动的对比，分析了不规则复合型脉动的混沌特征和产生机理。分析结果表明：不规则复合型脉动为典型的混沌运动，热驱动力、流动阻力和摇摆引起的附加外力的相互作用和耦合导致了混沌的出现。
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| 关 键 词： | 自然循环 摇摆运动 不稳定性 混沌振荡 |
Study on Chaotic Characteristics of Natural Circulation Flow Instability Under Rolling Motion |
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| ZHANG Wen-chao
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TAN Si-chao
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GAO Pu-zhen
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ZHANG Hong
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ZHANG Hong-yan.Study on Chaotic Characteristics of Natural Circulation Flow Instability Under Rolling Motion[J].Atomic Energy Science and Technology,2012,46(6):705-709. |
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| Authors: | ZHANG Wen-chao TAN Si-chao GAO Pu-zhen ZHANG Hong ZHANG Hong-yan |
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| Affiliation: | 1.National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, Harbin 150001, China；2.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041, China;3.Naval Equipment Department, Beijing 100841, China |
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| Abstract: | Non-linear time series analysis on irregular complex flow oscillations of natural circulation system under rolling motion was studied.The correlation dimension,K2 entropy and maximal Lyapunov exponent(MLE) were determined based on phase space reconstruction theory.The chaotic features of the irregular complex flow oscillations were analyzed by comparing with density wave oscillation and trough-type flow oscillation base on the results of geometric invariants.The results indicate that irregular complex flow oscillations are typical chaotic oscillations,the interaction and feedback of thermal driving forces,flow resistance and additional forces caused by rolling motion lead to the emergence of chaos. |
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| Keywords: | natural circulation rolling motion instability chaotic oscillation |
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