在泡流中使用四个传感器探针对关键的两相流量参数进行数值评估和评估
Guillem Monrós-Andreu1, Carlos Peña-Monferrer1, Raúl Martínez-Cuenca1
1Department of Mechanical Engineering and Construction, Universitat Jaume I, 12071 Castelló de la Plana, Spain.
Sensors (Basel, Switzerland)
|December 31, 2025
概括
这项研究引入了蒙特卡洛框架,以提高泡流中的侵入式探测器准确性. 它为界面面积,速度和和弦长度提供了校正规律,提高了测量可靠性.
科学领域:
- 流体力学 流体力学 流体力学
- 多相流程 多相流程
- 实验技术 实验技术 实验技术
背景情况:
- 侵入性相位检测探头是气液泡流特征的标准.
- 探测器的准确性受到几何和气泡探测器相互作用的限制.
- 经典假设包括球形气泡和轴向轨迹,这些通常是不现实的.
研究的目的:
- 开发一个蒙特卡洛框架,用于评估泡流中的四传感器侵入式探头.
- 为了放松球形气泡和纯轴轨迹的假设.
- 为界面面积度,泡/流速和和弦长度提供统一的估计方法.
主要方法:
- 开发了一个蒙特卡洛模拟框架.
- 气泡被建模为球体或圆形,其发生角分布在统计学上.
- 探索了广泛的非维的探头几何形状.
主要成果:
- 基于距离直径 (ap/D),探针半径 (rp/D) 和缺失比 (mr) 来得出紧的校正规律和设计图.
- 轴速度估计显示,推几何体 (0.5≤ap/D≤2,rp/D≤0.25) 和mr≤0.7.7的典型误差在±10%以内.
- 开发了和弦长度和界面面积的校正,即使在多分散泡流中也显示出高精度.
结论:
- 该框架为设计和使用四传感器侵入式探头提供了定量指导方针.
- 具有几何意识的校正因子提高了泡流量测量的解释.
- 与建议的几何形状的偏差可以导致显著的速度和和弦长度错误 (>20-30%).
更多相关视频
11:14A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
Published on: January 10, 2017
12.1K
09:37Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
Published on: August 26, 2019
6.1K
相关概念视频
Pipe Flowrate Measurement: Problem Solving
783
A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is achieved...
783
Pipe Flowrate Measurement
1.1K
In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
The orifice meter is a simple,...
1.1K
Measurement of Fluid Pressure
559
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...
559
Turbulent Flow: Problem Solving
363
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
363
The Buckingham Pi Theorem
1.5K
The Buckingham Pi theorem provides a structured method to simplify fluid dynamics problems by reducing complex systems of variables to dimensionless terms.
1.5K
