SIMULATION OF THE DYNAMICS OF WETTING THE UNDERLYING SURFACE DURING AVIATION FIRE EXTINGUISHING

A mathematical model of wetting the underlying surface on discharge of a cooling agent into a fi re site from the spillway device of the aircraft is presented. The model includes the equations of motion of polydisperse droplets in the gravity fi eld, taking into account their fragmentation, evaporation, and wind force. The results of the conducted studies show that the length of the wetted strip is determined mainly by the length of the primary cloud and, to a lesser extent, by the initial droplet velocity and the distribution of wind velocity in the atmosphere.
A mathematical model of wetting the underlying surface on discharge of a cooling agent into a fi re site from the spillway device of the aircraft is presented. The model includes the equations of motion of polydisperse droplets in the gravity fi eld, taking into account their fragmentation, evaporation, and wind force. The results of the conducted studies show that the length of the wetted strip is determined mainly by the length of the primary cloud and, to a lesser extent, by the initial droplet velocity and the distribution of wind velocity in the atmosphere.
Author:  O. V. Matvienko, V. A. Arkhipov, O. I. Daneiko, A. S. Usanina,a S. A. Basalaev, A. M. Bulavko
Keywords:  aircraft fi re suppression, liquid–drop cloud, gravitational sedimentation, high-temperature environment, fi re site, fragmentation and evaporation of droplets, mathematical simulation
Page:  1233