旋转喷嘴的喷雾空间分布及其目标灰尘降落区域预测的数值模拟
Cuicui Xu1,2, Xinyu Jia1, Jingjing Jing3
1College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
Scientific reports
|November 6, 2024
概括
增加喷嘴压力可以减少滴滴大小,并优化除尘区域. 较高的压力导致更细的喷雾剂,提高了特定轴范围内的除尘效率.
科学领域:
- 流体动力学 流体动力学
- 喷雾技术喷雾技术的使用
- 颗粒分析 颗粒分析
背景情况:
- 喷嘴的性能对于工业过程至关重要.
- 了解滴滴特征会影响喷雾的有效性.
- 优化喷雾参数是诸如防尘等应用的关键.
研究的目的:
- 在不同压力下研究喷嘴喷雾特性.
- 分析液滴尺寸分布和液膜厚度.
- 开发一个预测模型,为最佳的减少灰尘的区域.
主要方法:
- 对内部和外部喷嘴流量场的实验分析.
- 使用MATLAB测量液体薄膜厚度和滴滴大小分布.
- 关于除尘区的预测模型的开发.
主要成果:
- 液体薄膜的厚度随着压力的增加而四度减小,从2MPa时的0.281mm降至10MPa时的0.172mm.
- 滴滴断裂在2 MPa的[0-700 mm]轴间中占主导地位.
- 滴滴的中位直径 (D50) 随着压力的增加而下降,最大的下降在2-6MPa之间 (约. 每2 MPa 的15%) 超过6-10 MPa (大约. 8%每 2 MPa). 这样一来,我们就能保持稳定.
结论:
- 喷嘴压力显著影响滴滴大小和喷雾特性.
- 预测模型可以根据压力确定最佳的除尘区域.
- 结果为优化粉尘控制中的喷雾喷嘴应用提供了洞察力.
相关概念视频
Pipe Flowrate Measurement: Problem Solving
317
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...
317
Typical Model Studies
340
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
340
Design Example: Flow Through a Fire Extinguisher
119
A fire extinguisher that uses pressurized water relies on fluid dynamics principles to generate a high-velocity stream capable of suppressing flames. The water is stored at a much higher pressure inside the extinguisher than the surrounding atmosphere. This pressure difference forces the water to flow rapidly when the extinguisher is activated, and the behavior of the water as it exits the nozzle can be understood using fundamental equations of fluid dynamics.
The key to understanding how the...
The key to understanding how the...
119


