Revelation of optimum modes of ultrasonic influence for atomization of viscous liquids by mathematical modelling

International Conference and Seminar of Young Specialists on Micro/Nanotechnologies and Electron Devices Pub Date : 2012-07-02 DOI:10.1109/EDM.2012.6310201

V. Khmelev, R. Golykh, A. Shalunov, A. V. Shalunova, D. V. Genne

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引用次数: 8

Abstract

In the article the process of cavitation low-frequency (up to 250 kHz) ultrasonic atomization of viscous liquids in a layer is investigated. It takes place with entering of acoustic energy to working zone through liquid. To reveal optimum modes of ultrasonic influence depending on physical properties of atomized liquid (viscosity, surface tension, etc.) the model describing stepwise transformation of mechanical vibration energy of ulrtasonic frequency into energy of capillary waves providing the formation of drops was proposed and developed. For the first time we offer theoretical explanation of essential dependence of drop diameter on vibration amplitude of spraying surface based on changes of mean thickness of ridges of capillary waves according to their amplitude due to occurence of nonlinear effects. Obtained results can be a base for the design of specialized ultrasonic atomizers of liquids with high viscosity for the formation of aerosols with specified productivity and dispersed features.

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用数学模型揭示了超声对粘性液体雾化的最佳影响模式

本文研究了一层内粘性液体的空化低频(高达250khz)超声雾化过程。它发生在声能通过液体进入工作区域时。为了揭示超声影响雾化液体的最佳模式，根据雾化液体的物理性质(粘度、表面张力等)，提出并建立了描述超声频率的机械振动能量逐步转化为提供液滴形成的毛细波能量的模型。本文首次从理论上解释了由于非线性效应的发生，毛细波脊的平均厚度随毛细波振幅的变化而变化，水滴直径与喷淋表面振动幅值的本质依赖关系。所得结果可作为设计高粘度液体专用超声雾化器的基础，用于形成具有特定生产率和分散特征的气溶胶。

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International Conference and Seminar of Young Specialists on Micro/Nanotechnologies and Electron Devices

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