...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Hydrodynamics >CHAOTIC HYDRODYNAMICS IN HORIZONTAL GAS-LIQUID BUBBLY FLOW
【24h】

CHAOTIC HYDRODYNAMICS IN HORIZONTAL GAS-LIQUID BUBBLY FLOW

机译：水平气液泡流中的混沌水动力

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To investigate the non-linear hydrodynamics in horizontal gas-liquid bubbly flow, time-series data of local void fraction were obtained using a double sensor probe. Both deterministic chaos and stochastic analyses were used to diagnose the dynamic behaviors in the system. The power spectra of the local void fraction exhibited no single distinct peak, indicating the aperiodic nature of the variation of the local void fraction. The kolmogorov entropy and correlation dimension of the attractor reconstructed from the time-series data by the embedding method were to be positive and very large, the Hurst exponent computed from the rescaled range analysis was found to be larger than 0. 5, indicating the non-linear chaotic feature of the system. The Kolmogorov entropy and the correlation dimension decrease with increasing liquid superficial velocity, and the correlation dimension changes less if the gas superficial velocity is high. On the other hand, the fluctuation of local void fraction in horizontal gas-liquid bubbly flow could be considered to take place due to the zigzag motion of bubbles with different shape, size and velocity.
机译：为了研究水平气液气泡流中的非线性流体动力学，使用双传感器探头获得了局部空隙率的时间序列数据。确定性混乱和随机分析均用于诊断系统中的动态行为。局部空隙率的功率谱未显示单个明显的峰，表明局部空隙率变化的非周期性性质。通过嵌入方法从时间序列数据重建的吸引子的kolmogorov熵和相关维数为正且非常大，发现通过重新缩放范围分析计算出的Hurst指数大于0。5，表明非-系统的线性混沌特征。随着液体表观速度的增加，Kolmogorov熵和相关维数减小，如果气体表观速度高，则相关维数变化较小。另一方面，由于不同形状，大小和速度的气泡的曲折运动，可以认为水平气液气泡流中局部空隙率的波动是发生的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号