在超声波激发下低温双相流中的非线性气泡动力学,考虑到质量转移
Jin Zhang1, Yu Zhang2, Yong Chen3
1State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, People's Republic of China; Chengdu Fluid Dynamics Innovation Center, Chengdu 610071, People's Republic of China.
Ultrasonics sonochemistry
|June 26, 2025
概括
这项研究模拟了超声波下的冷气泡动力学,考虑了蒸气质量转移. 结果显示,蒸汽转移会影响泡共振和温度,在特定条件下有可能崩.
科学领域:
- 流体动力学 流体动力学
- 声学 声学 在声学方面
- 热力学是一种热力学.
背景情况:
- 气液双相流量的超声波测量依赖于泡动力学.
- 低温双相流涉及液体蒸汽,通过质量转移影响泡振荡.
研究的目的:
- 在超声波激发下开发一个数值模型,用于低温气泡动力学,包括蒸汽质量转移.
- 分析超声波参数和环境压力对气泡振荡的影响.
主要方法:
- 使用理想气体-液体蒸汽假设和冷流体状态方程建立了一个数值模型.
- 执行数值计算以分析不同条件下的泡振荡.
- 使用有限体积模拟模型验证了理论模型.
主要成果:
- 蒸汽质量转移增加了泡共振频率和温度变化.
- 蒸汽质量转移减少了泡半径变化.
- 低环境压力和共振超声波频率可以导致非线性泡振动和更高幅度的潜在崩.
结论:
- 开发的模型准确地预测了超声波激发下的冷气泡动力学.
- 蒸汽质量转移是影响冷二相流中的泡行为的一个关键因素.
- 了解这些动态对于低温环境中的超声波测量应用至关重要.
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