Amelia, and Nakajima, Madoka and Ting, Yung and Leorna, Mark (2015) A Comparison Droplet Formation for the Flexural Curvature Vibration and Flat Surface Vibration by Numerical Simulation. In: ICLASS 2015, 23-08-2015 - 23-08-2015, Tainan - Taiwan.
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Abstract
Numerical simulation is carried out to study the phenomena of droplet formation, diameter and size distribu- tion in ultrasonic atomization process as the effect of different vibrating surface. Differ from the ultrasonic common vibrating surface of nozzle spray structure, flexural radial curvature vibration of bending tube model is proposed to generate droplet spray atomization. Various tube lengths are applied to study the effect of different curvature radius. Longitudinal vibration on flat surface vibration of ultrasonic nozzle spray is also investigated for comparison. Volume of Fluid (VOF) of ANSYS FLUENT was applied to perform ultrasonic atomization process in 2D model. In this study, ultrasonic frequency is set to 70 kHz at constant maximum amplitude for all case studies. In this simulation is found that flexural radial curvature vibration could generate nearly equivalent droplet diameter with flat surface vibration and have narrower distribution, whereas the curvature vibration shape affects the droplet size distribution.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | Ultrasonic atomization, curvature vibration, Volume of Fluid |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering Department |
| Depositing User: | Admin |
| Date Deposited: | 12 Feb 2016 19:47 |
| Last Modified: | 09 Aug 2017 19:11 |
| URI: | https://repository.petra.ac.id/id/eprint/20091 |
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