Computational and experimental study of the two-phase mixing in gas-dynamic ignition system

Physical and Mathematical Modeling of the Interaction of Water Droplets and High-Speed Gas Flow

“…At the moment criterial models of gas-dynamic breakup of droplets based on experimental data are relevant. Such models can be used for the analysis of processes as well as for the numerical simulation of two-phase flows using the combined Lagrange-Euler approach [24][25][26]. In this case the problems of determining the spatial distribution of the concentration and size of droplets as well as the parameters of the movement of gaseous and dispersed media can be solved.…”

“…However, the known parametric models [11,19,20,27] have a limited ranges of application in terms of velocities, Weber and Reynolds numbers. In particular, the analysis of works [1,23] shows that the widespread cone-shaped dependence [27] for describing gas-dynamic fragmentation can give more than a twofold difference with experiment [24] for regimes with Weber numbers less than 100. The latter it is explained by the fact that the cone-shaped dependence is more than suitable for multimode bag mode and does not take into account the unsteady flow regime (flow structure localized near the drop) and drop deformation (deviation from the spherical shape).…”