title   
  

A multiphase ISPH method for simulation of droplet coalescence and electro-coalescence

Rahmat, Amin and Yıldız, Mehmet (2018) A multiphase ISPH method for simulation of droplet coalescence and electro-coalescence. International Journal of Multiphase Flow, 105 . pp. 32-44. ISSN 0301-9322 (Print) 1879-3533 (Online)

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Official URL: http://dx.doi.org/10.1016/j.ijmultiphaseflow.2018.03.006

Abstract

In this paper, a numerical algorithm is introduced for simulation of droplet coalescence and electro-coalescence within the framework of the Smoothed Particle Hydrodynamics (SPH) method. The algorithm is developed based on the film drainage model which is used for simulation of coalescence in mesh-dependent methods. The film drainage model allows the SPH particles which are entrapped between two colliding droplets to be discharged. The algorithm is validated with available numerical and experimental results. Then, the algorithm is employed to model two-dimensional coalescence problems for wide ranges of Weber number (0 < We < 30) and impact parameter (0 < β < 0.8). Moreover, the method is extended for the simulation of the electro-coalescence of 2D stationary droplets. Employing the leaky dielectric model, it is observed that both prolate and oblate deformed pair of droplets approach each-other, leading to the permanent coalescence.

Item Type:Article
Uncontrolled Keywords:Smoothed Particle Hydrodynamics (SPH) method; Multiphase flows; Binary coalescence; Electro-coalescence; Film drainage model
Subjects:UNSPECIFIED
ID Code:36046
Deposited By:Mehmet Yıldız
Deposited On:15 Aug 2018 22:57
Last Modified:28 Apr 2020 14:09

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