The Analysis of Influence of the Nozzle Structure and Fluid Injection Path on the Efficiency of Two-Phase Mixing in a Constant Cross Section Channel

The development of high performance combustion chambers for future propulsion and power plants is associated with the intensification of two-phase mixing process, namely in constant cross section channels. Using well-documented experimental studies, in most cases it is possible to obtain patterns of change in integral characteristics of the working process such as fuel combustion completeness, coefficient of efficiency, etc. However, experimental data do not enable detailed analysis of droplet fragmentation and evaporation processes, which is necessary to further improve the mixing efficiency in the flow path. Therefore, it is important to study these processes through numerical simulation. The paper presents the mathematical model and the results of studies of two-phase mixing in a constant cross section channel with the wake and transverse fluid supply through spray and centrifugal injectors. Based on the simulation results, recommendations on the intensification of the mixing processes in the constant cross section channel are given. The data obtained can be used for selecting configuration of the fuel supply system in high-enthalpy flow generators, power and propulsion plants as well as processing and testing equipment.

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