盐水温度对化气泡动态过程和崩行为的影响
Guihua Fu1, Jing Luo1, Weilin Xu1
1State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China.
Ultrasonics sonochemistry
|August 5, 2025
概括
盐水的温度会影响泡动态,影响化学反应和微生物降解. 较高的温度降低了化强度,为工业应用提供了一种新的控制方法.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 流体动力学 流体动力学
- 声学 声学 在声学上
背景情况:
- 洞腔对于化学反应和微生物降解至关重要.
- 液体温度显著影响泡动力学和工艺效率.
- 了解温度对化的影响是优化关键.
研究的目的:
- 研究盐水温度对泡崩行为的影响.
- 分析温度如何影响空洞化强度在自由场和近地条件下.
- 探索基于温度的化强度控制策略.
主要方法:
- 利用冠状动脉放电来诱导气泡.
- 采用高速摄像系统进行泡动态观测.
- 使用温度控制系统和高频压力测试.
主要成果:
- 盐水温度的增加导致了更大的泡半径和更长的膨胀/崩时间.
- 高温降低了冲击波压力峰值和能量.
- 观察到微喷射速度下降和冲击波压力下面的表面随着温度的增加.
- 在更高的温度下发现了二次化和"卫星泡".
结论:
- 盐水温度是影响泡崩动态和洞穴强度的关键因素.
- 温度会影响蒸发-凝结速度,改变微射流和冲击波的行为.
- 研究结果表明,温度控制作为一种新的方法,可以在实际场景中管理化强度.
相关概念视频
Vapor Pressure of Fluid
1.5K
The vapor pressure of a fluid is a crucial concept in fluid mechanics, influencing phenomena such as boiling and cavitation. Vapor pressure refers to the pressure exerted by a vapor at a state of thermodynamic equilibrium with its corresponding liquid phase at a specific temperature. It represents the tendency of molecules to escape from the fluid surface into the vapor phase.
When a liquid is placed in a closed container with a small air space, and the space is evacuated, vapor molecules will...
When a liquid is placed in a closed container with a small air space, and the space is evacuated, vapor molecules will...
1.5K
Physical Properties Affecting Solubility
23.5K
Solutions of Gases in Liquids
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
23.5K
Solution Equilibrium and Saturation
19.5K
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
19.5K
Excess Pressure Inside a Drop and a Bubble
2.2K
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
2.2K
Turbulent Flow: Problem Solving
185
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...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
185
Effect of Sea Water on Concrete
453
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
453


