“…2, 4, 5, droplet breakup mechanisms (Lefebvre and McDonell, 2017), and turbulence. A problem with filtering for tiny droplets is that they could be satellite droplets of a breakup, meaning a probable clustering with large droplets, biasing v g estimation (Acharya et al, 2021). In this case, they represent only a fraction of the turbulent fluctuations.…”