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压力振荡方法的滑动校正和暂时处理用于透性测量
Mingbao Zhang1, Zhiguo Tian1, Moran Wang1
1Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.
The Review of scientific instruments
|June 23, 2025
概括
这项研究引入了一种改进的压力振荡方法来测量多孔介质的透性,大大减少了测量时间. 它澄清了克林肯伯格校正,并统一了对不断变化的媒体的稳定状态和不稳定状态方法.
科学领域:
- 地质科学 地质科学
- 化学工程是化学工程的重要组成部分.
- 物理 物理学 物理
背景情况:
- 孔隙介质的透性测量对于了解各种地质和工程系统中的流体流动至关重要.
- 不断变化的多孔介质为准确的透性评估带来了独特的挑战.
- 现有的方法,如脉冲衰变方法,可能会耗时.
研究的目的:
- 开发和验证一个分析解决方案的压力振荡方法在不断变化的多孔介质.
- 在本方法中建立Klinkenberg校正的理论基础.
- 提出新的数据处理方法,并分析实验参数.
主要方法:
- 使用毛细管模型和扰动扩张的分析解决方案,结合滑动边界条件.
- 理论阐明克林肯伯格关系和克努森数对应.
- 使用压力振荡和脉冲衰变方法进行实验验证.
主要成果:
- 压力振荡方法的短暂溶液与周期溶液一致.
- 准稳定状态和不稳定状态方法在压力振荡条件下是统一的.
- 与脉冲衰变方法相比,测量时间至少缩短了四倍.
结论:
- 增强的压力振荡方法为透度测量提供了更快,更有理论依据的方法.
- 该研究为工程应用提供了一个统一的框架和实际指导.
- 这种方法有效地表征了不断变化的多孔介质的透性.
相关概念视频
01:30Equipments Used To Measure Blood Pressure
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:16Measurement of Fluid Pressure
Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...