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蒸汽泡在冷液体中的暴力崩
Kewen Peng1, Shouceng Tian2, Yiqun Zhang2
1Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan 523808, China.
Ultrasonics sonochemistry
|March 15, 2024
概括
研究了在冷液体 (如液) 中强烈蒸汽泡的崩. 对于火箭发动机来说至关重要的强烈崩在特定的压力-温度条件下发生,为工程设计提供了洞察力.
科学领域:
- 热力学是一种热力学.
- 流体动力学 流体动力学
- 低温生化技术 (Cryogenics) 是一个非常重要的技术.
背景情况:
- 低温液体中的蒸汽泡崩可能是暴力的,对工程应用有重大影响,例如液体推进剂火箭发动机中的空洞侵蚀.
- 这些强烈的现象尚未得到充分理解,需要对它们的发生和特征的条件进行系统的调查.
研究的目的:
- 系统地调查导致暴力蒸汽泡在液中崩的环境条件.
- 分析这些暴力崩事件的热力学特征.
- 为工程应用提供冷流体中化处理的新视角.
主要方法:
- 在环境压力-温度参数空间内使用布伦纳时间比 (χ) 识别暴力崩状态.
- 通过使用完整的数值模拟来改进崩预测和崩类别的插图.
- 机制分析以确定影响崩强度的关键时刻,特别是当周围的液体进入超临界状态时.
主要成果:
- 在压力-温度参数空间中,使用时间比 χ. 确定了强烈崩的状态.
- 观察到两种类型的崩:温和的墙壁速度崩 (1 < χ < 10) 受热效应的影响,以及更多的惯性崩 (χ > 10).
- 崩强度与周围液体进入超临界状态时发生的动态密切相关.
结论:
- 该研究阐明了在液中暴烈蒸汽泡崩的条件和热力学特征.
- 这些发现提供了对冷却液体中洞穴的关键理解,区分了热冲击和惯性崩.
- 这些结果对工程设计具有重要意义,旨在减轻冷应用中强烈的洞穴活动的不良影响.
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