THE MODEL ADAPTATION OF THE TWO-NOZZLE SWIRL ATOMIZER FOR THE DESIGN-EXPERIMENTAL RESEARCH OF THE WORKING PROCESS IN THE MAIN COMBUSTION CHAMBERS OF TURBOJET ENGINES
DOI:
https://doi.org/10.54858/dndia.2022-18-18Keywords:
turbojet engines, swirl atomizer, liquid flow numerical simulation, working process, resourceAbstract
In the article formulated the assumption concerning the possibility of using adapted model of the two-nozzle swirl anomizer at the complex design-experimental research of the working process in the flame tube for main combustion chamber of turbojet engines. A numerical simulation of the liquid flow into the air environment is basis on the Reinolds-averaged Navier-Stokes equations, that describe the flow of the two-phase, non-compressed liquid. On the basis of comparison results of the numerical simulation with the results of the physical experiment on the hydraulic spill of the two-nozzle swirl atomizer turbojet engines the correlation of the particle angle differs from 3 to 8 degrees. There is also a correspondence in the crushing of the liquid conical film on separate drops, which is confirmed by the beginning of the process of atomization at the same distance from the initial cut of the nozzle. Therefore, it can be concluded that the possibility of using formulated assumption is justified. This allows the required accuracy for next purposes at the complex design-experimental research of the working process in the flame tube for main combustion chamber of turbojet engines. Specifically determination of influence of inverse zone currents on the character of fuel spray and its mixing with air on engine operation at steady-state modes. Establish a connection between the flow pattern of the working process in the in the main combustion chambers and the main structural damage that is found during the overhaul of the turbojet engines.
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