NUMERICAL SOLUTION OF THE CONJAGATE PROBLEM OF HETEROGENEOUS METALLIZED SOLID FUEL COMBUSTION WITH REGARD FOR GASDYNAMIC EFFECTS

The paper presents the physicomathematical model and the results of the numerical simulation of the metallized solid propellant (MSP) combustion.

Дискретно-капельный режим обледенения цилиндра в поперечном переохлажденном потоке

It is developed a physicomathematical model of the spatial-temporal evolution of an ice layer growing upon colliding with a solid surface of individual droplets sliding along the surface and solidifying on it, that leads to a two-dimensional roughness (ice hillocks). By the example of a circular cylinder in cross-flow, illustrations of the calculation results for a set of governing parameters typical for the ground-based experiments in an aircooling tunnel are given.

Regularities of Fluoropolymer Coating Growth on Pretreated Surfaces from Active Gas Phase

The kinetic and morphological peculiarities of polytetrafluoroethylene (PTFE) coating growth onset from the active gas phase on differently pretreated substrates are considered. The substrate surface energy was found to exert an effect on distribution of polymer micro-and nanoparticles both at the initial stage so during coating growth. The substrate surface activation was proved to result in the increasing growth rate and formation of a continuous coating with a thinner apparent thickness. The physicomathematical model of presented regularities was elaborated.