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http://dx.doi.org/10.3795/KSME-B.2011.35.4.353

A Numerical Analysis of the Binary Droplet Collision by Using a Level Set Method  

Lee, Sang-Hyuk (Dept. of Mechanical Engineering, Sogang Univ.)
Hur, Nahm-Keon (Dept. of Mechanical Engineering, Sogang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.4, 2011 , pp. 353-360 More about this Journal
Abstract
The prediction of binary droplet collisions is important in the formation of falling drops and the evolution of sprays. The droplet velocity, impact parameter, and drop-size ratio influence the interaction between the droplets. The effect of these parameters results in complicated collision phenomena. Droplet collisions can be classified into four types of interactions: bouncing, coalescence, reflexive separation, and stretching separation. In the present study, the interfacial flow problem of the droplet collision was numerically simulated by using the level set method. 2D axisymmetric simulations on the head-on collisions and 3D simulation on the off-center collisions were performed. The numerical results of droplet behavior after the collision agreed well with the experimental and analytical results. The mixing of the mass of the initial droplets after the collision was also predicted by using different species index of colliding droplets.
Keywords
Binary Droplet Collision; Two-phase Flow; Level Set Method; Head-on Collision; Off-center Collision; Droplet Identity Tracking;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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