Turbulency influence on coagulation of disperse particles in rocket engine nozzles

Comparative estimation of the coagulation constants inherent in collision processes and caused by turbulent pulsation of carrying flow and Brownian motion of particles, is carried out. Estimation is performed for the disperse particles of boric anhydride formed in the combustion product plume of the rocket engine operating on (H₂O₂ + B₅H₉) propellant. It is shown that the turbulent mechanism constant dominates at a certain turbulency rate of the carrying flow.