气液双相流程流动不稳定性的多尺度表征
Qing-Ming Sun1,2, Qing-Chao Yu1, Di Ba1,3
1School of Mechanical and Electrical, Qiqihar University, Qiqihar 161000, China.
Entropy (Basel, Switzerland)
|February 27, 2026
概括
一种新的方法,时移多尺度同概率符号样本 (TMESE),准确地描述了气液双相流动的不稳定性. 气泡流最不稳定,流最不稳定,为工程应用提供了洞察力.
科学领域:
- 流体动力学 流体动力学
- 非线性动力学是一种非线性动力学.
- 复杂系统分析 复杂系统分析
背景情况:
- 气液双相流动不稳定性对工业系统构成风险.
- 准确地描述多尺度动态是至关重要的,但具有挑战性.
- 现有的方法与复杂的流动模式作斗争.
研究的目的:
- 引入一种新的方法,即时间转移多尺度同概率符号样本 (TMESE),用于表征气液两相流动不稳定性.
- 使用TMESE分析泡,和流的动态行为.
- 建立一个对多尺度流动不稳定的定量衡.
主要方法:
- 开发和应用时间转移多尺度同概率符号样本 (TMESE) 方法.
- 在八个典型时间序列上使用四个评估指标进行验证.
- 对泡,和流动流动动力学的定性和定量分析.
主要成果:
- TMESE有效地捕捉了不同气液流动模式的进化特征.
- 平均TMESE和复杂度指数 (CI) 的联合分布可靠地量化了多尺度流动不稳定性.
- 泡流表现出最高的不稳定性,其次是流量流动,而流量流动是最不稳定的.
- 增加的气体或液体表面速度与更高的平均TMESE和CI值相关.
结论:
- TMESE提供了一种强大的方法来表征气体液体双相流动不稳定性.
- 基于TMESE的复杂性指数为评估流动不稳定性提供了可靠的定量指标.
- 这些发现支持对工业气流液体流系统的增强预测和控制策略.
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