上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (04): 520-523.

• 能源与动力工程 • 上一篇    下一篇

加热通道内超临界流动的稳定性分析
——频域分析

侯东，刘鹏飞，林萌，杨燕华   

  1. （上海交通大学 机械与动力工程学院， 上海 200240）
  • 收稿日期:2011-04-04 出版日期:2012-04-28 发布日期:2012-04-28
  • 基金资助:

    国家重点基础研究发展规划（973）项目（2007CB209806）

The Flow Stability Analysis of Supercritical Fluid in Heated Pipes：Frequency Domain Analysis

 HOU  Dong, LIU  Peng-Fei, LIN  Meng, YANG  Yan-Hua   

  1. (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-04-04 Online:2012-04-28 Published:2012-04-28

摘要： 详细描述了超临界流体流动稳定性分析的频域法模型.利用该模型针对加热通道内超临界水的流动进行了密度波稳定性分析，并给出了稳定性特征图.对系统入口和出口阻力系数、进口和出口压降等进行了参数敏感性分析.结果表明，高的入口阻力系数有利于系统的稳定，但高的出口阻力系数不利于系统的稳定，增加系统进口和出口压差对系统的稳定性是有利的.

关键词: 频域法, 流动稳定性, 超临界

Abstract: The frequency domain model for stability analysis of flow dynamics with supercritical fluid was described. With the model the density wave oscillation of supercritical water flowing in heated pipes was studied, and the stability maps were constructed. The sensitivity studies of system inlet and outlet orifice coefficients, system pressure drop, etc., were carried out. The results show that larger inlet orifice coefficients can improve the system stability, but larger outlet orifice coefficients can degrade the system stability. Increasing the system pressure drop can also be beneficial to the system stability.
Key words： frequency domain model; flow stability; supercritical

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