Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/75771
Title: | Kinetic energy recovery and interface hysteresis of bouncing droplets after inelastic head-on collision | Authors: | Zhang, ZY Zhang, P |
Issue Date: | 2017 | Source: | Physics of fluids, 2017, v. 29, no. 10, 103306, p. 103306-1-103306-13 | Abstract: | Binary collision of unequal-size droplets was investigated numerically by using the front tracking method, with particular emphasis in studying the kinetic energy recovery and the interface hysteresis of bouncing droplets. The numerical results were sufficiently validated against the high-quality experimental data in the literature to verify the quantitative predictivity of the numerical methodology in simulating droplet bouncing. Distinct stages of droplet deformation and viscous dissipation during droplet collision were revealed and explained for their dependence on the Weber number and the size ratio. A linear fitting formula that well correlates the kinetic energy recovery factor of bouncing droplets with various collision parameters was proposed and would be practically useful in modeling inelastic droplet bouncing in Lagrangian spray simulation. As an interesting post-collision characteristic of bouncing droplets, the interface hysteresis was found to favor smaller droplet deformation by decreasing the size ratio or decreasing the Weber number or increasing the Ohnesorge number. | Publisher: | American Institute of Physics | Journal: | Physics of fluids | ISSN: | 1070-6631 | EISSN: | 1089-7666 | DOI: | 10.1063/1.5000547 | Rights: | © 2017 Author(s). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Z. Y. Zhang and P. Zhang, Phys. Fluids 29, 103306 (2017) and may be found at https://dx.doi.org/10.1063/1.5000547 |
Appears in Collections: | Journal/Magazine Article |
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Zhang_Kinetic_Energy_Recovery.pdf | 3.33 MB | Adobe PDF | View/Open |
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