Abstract
Experimental studies on binary water droplet collisions considering size ratio effects
Highlights
A spray process is a very complex multiphase system in which various elementary processes are involved
The collision map for Δ = 0.24 was generated with the droplet chain penetrating into the spray
Compared to the case of water droplet collisions in a 1 bar air atmosphere given by Qian and Law [5], the bouncing regime can be found in this study at We < 5 with B > 0.6
Summary
A spray process is a very complex multiphase system in which various elementary processes are involved. In these maps the non-dimensional impact parameter B (see Eq 1) is plotted against collision Weber number (see Eq 2), using the size of the smallest participating droplet. In addition to understanding the processes in the sprays, the structure of a generalized collision map is necessary for the prediction of sprays by the Euler/Lagrange approach [2], without the need to perform experiments whenever different fluid properties are considered
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