when fuel is sprayed in engine, jet primary and secondary breakup happen and tiny droplets are formed. The performance of fuel spray in engine depends on the size of these droplets.
Simulation of single drop breakup using interFoam
Here the mechanism of single droplet breakup is shown when air is crossing over it. The simulation is done with interFoam on two-dimensional axisymmetric grid where refined near droplet. The grid and initial shape of droplet are displayed below:
In order to create above grid following utilities are used:
initial drop in computational domain is placed with setField. The air flow velocity is around Mach number 0.1. The droplet evolution is shown below: