RUI: Experimental and Theoretical Studies on Ultrasound- Modulated Two-Fluid Atomization

RUI：超声调制二流体雾化的实验和理论研究

• 批准号: 9812050
• 负责人: Shirley Tsai
• 金额: --
• 依托单位: California State University-Long Beach
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-12-15 至 2003-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812050&HistoricalAwards=false
• 关键词: RUI; Experimental; Theoretical; Studies; Ultrasound

Several aspects of two-fluid atomization will be investigated by experimental and theoretical means: the mechanisms of ultrasound modulated atomization, application of capillary wave theory, and the role of Taylor-mode breakup of capillary waves. Ultrasound modulation will be compared to piezoelectric modulation in pressure swirl nozzles. The research will explore the performance of an invention of the P.I. that take advantage of the resonance between liquid capillary waves generated by ultrasound and by higher velocity air. A theoretical approach of atomization is proposed based on the linear theory of amplitude growth rates of Taylor and Jeffreys. The ultrasound frequency and power flow parameters, turbulence level, and fluid rheological properties will be varied during the experiments. Undergraduate and graduate students will be involved in the project. If successful, the work will contribute to improved production methods for uniform droplets and powders, with potential applications in advanced materials, spray coating, and waste minimization.

通过实验和理论手段研究了双流体雾化的几个方面：超声调制雾化的机理，毛细管波理论的应用，以及泰勒模式破碎的毛细管波的作用。 将在压力旋流喷嘴中将超声调制与压电调制进行比较。 这项研究将探索P.I.发明的性能。其利用了由超声波和高速空气产生的液体毛细波之间的共振。 基于Taylor和Jeffreys的振幅增长率线性理论，提出了一种雾化的理论方法。 在实验过程中，超声频率和功率流参数、湍流水平和流体流变特性将发生变化。 本科生和研究生将参与该项目。 如果成功，这项工作将有助于改进均匀液滴和粉末的生产方法，并在先进材料、喷涂和废物最小化方面具有潜在的应用。