Simulation of Liquid Jet Atomization Coupled with Forced Perturbation

In this paper, the coupling between atomization and forced perturbation is considered. The effect of perturbation frequency and amplitude has been numerically investigated. A tree-based adaptive solver for time-dependent incompressible two-phase Navier-Stokes equations is employed to simulate the atomization process. The open source code is validated by theoretical, numerical and experimental results to demonstrate generic capability and accuracy in terms of atomization both in low-speed and high-speed regime. For a low speed jet, the breakup length and droplet diameter are examined to show the effect on breakup behaviour. For a high speed jet, the frequency response of jet can be classified into three different regions. The jet shows intense response for low frequency and weak response for high frequency. Perturbation amplitude also affects the atomization significantly.