Ultra-fine particle coagulation by Brownian motion at high concentration in
planar jet flow is simulated. A Taylor-Series Expansion Method of Moments is
employed to solve the particle general dynamic equation. The volume fraction
gets high value, very closes to that at the nozzle exit. As the vortex
pairing develops, the high volume fraction region rolls out and mixes with
the low value region. The enhancement factor given by Trzeciak et al. will be
less than one at some specific outer positions, which seems to be less
accurate than the one given by Heine et al.
High concentration Brownian coagulation in jet flow using two enhancement formulations