两相闭式热虹吸管混沌特性及其传热性能研究

Chaotic characteristics and heat transfer performance of two-phase closed thermosyphon

中文关键词: 两相闭式热虹吸管  最大Lyapunov指数  吸引子  混沌特性  传热性能

英文关键词: two-phase closed thermosyphon  maximum Lyapunov exponent  attractor  chaotic characteristics  heat transfer performance

中文摘要:

      探究两相闭式热虹吸管的传热混沌，以及操作参数对其混沌性和传热性能的影响，建立混沌特征参数与传热性能间的联系。通过搭建实验台测量两相闭式热虹吸管稳定运行过程中不同工况下的管壁温度信号，基于非线性分析的混沌理论研究处理测量的温度脉动信号，绘制吸引子轨迹图，建立最大Lyapunov指数与传热特征参数的联系，揭示传热性能与混沌特性的关系。结果表明：两相闭式热虹吸管具有确定性混沌行为，操作参数对混沌性和传热性能具有显著影响，混沌性与传热性能呈正相关关系。

英文摘要:

      The chaos of heat transfer of two-phase closed thermosyphon and the influence of operation parameters on its chaos and heat transfer performance are studied, and the relationship between chaos characteristic parameters and heat transfer performance is established. The temperature signals of two-phase closed thermosyphon under different working conditions were measured by setting up an experimental platform. Based on the chaos theory of nonlinear analysis, the measured temperature fluctuation signal is processed, the attractor trajectory is drawn, the relationship between the maximum Lyapunov exponent and the heat transfer characteristic parameters is established, and the relationship between the heat transfer performance and the chaos characteristic is revealed. The results show that the two-phase closed thermosyphon has deterministic chaos behavior, and the operation parameters have significant influence on the chaos and heat transfer performance, and the chaos has a positive correlation with the heat transfer performance.