Title

Droplet Impingement And Breakup On A Dry Surface

Keywords

Droplet; Impingement; Lattice Boltzmann; Spread factor

Abstract

In this work, new results of droplet impingement and breakup have been obtained using three-dimensional lattice Boltzmann method. All four phases after impingement, the kinematic, spreading, relaxation and equilibrium phases, leading to breakup have been obtained for a range of Weber number, Reynolds number and density ratio. Conditions have been chosen such that Re≪We for comparison with available data in the literature. The maximum spread factor compares well with experiments as well as the theoretical value of 0.5Re0.25. At Oh<0.15 and Capillary number, Ca<1.0, the relaxation phase is marked by the presence of strong oscillations in the spreading diameter. An analytical solution for breakup based on the conservation of energy is provided. Criteria for three-dimensional droplet breakup have been developed as functions of Re and We. © 2010 Elsevier Ltd.

Publication Date

10-1-2010

Publication Title

Computers and Fluids

Volume

39

Issue

9

Number of Pages

1696-1703

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.compfluid.2010.06.006

Socpus ID

77955052281 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77955052281

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