Open Access

ARTICLE

Parameter Scaling of the Aerodynamic Breakup of the Acoustic Levitated Droplets in an Air Jet Flow

Yanju Wei^1,*, Shengcai Deng¹, Jie Zhang¹, Yajing Yang², Hao Chen³

1 School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
2 Stage Key Laboratory of Mechanical Strength and Vibration, School of Aerospace, Xi’an Jiaotong University, Xi’an, 710049, China
3 School of Automobile, Chang’an University, Xi’an, 710064, China

* Corresponding Author: Yanju Wei. Email:

Energy Engineering 2021, 118(2), 225-235. https://doi.org/10.32604/EE.2021.012416

Received 29 June 2020; Accepted 09 October 2020; Issue published 23 December 2020

Abstract

The aerodynamic breakup of the droplet has been intensely studied in this paper. We aim to establish a unified relationship between dimensionless kinematic parameters such as displacement, spreading diameter, Weber number, time, and so on. The breakup characteristics of the acoustic levitated ethanol droplet are experimentally investigated when exposed to an air jet flow. The breakup phenomenons were recorded with a high-speed camera. The breakup characteristics were analyzed, and the physical models of the moving and transforming behaviors were established to explain the breakup mechanisms. We found that the displacement of the windward side of the droplet follows free acceleration rule, with the displacement, acceleration, and time in the dimensionless form. The spreading of the diameter during deformation can also be written in a simple equation as a function of Weber number and displacement. We also discussed more details.

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Keywords

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