Computational and experimental study of the influence of the shape of nozzle supersonic part on the flow structure in the gas-dynamic flow path of a model high-altitude test facility
V.S. Zakharov1,2,3, O.V. Guskov1,2, A.N. Prokhorov1,2, V.N. Berezhnoy4
1Baranov Central Institute of Aviation Motors, Moscow, Russia
2Moscow Institute of Physics and Technology, Dolgoprudny, Russia
3Bauman Moscow State Technical University
4Scientific Testing Center of the Space-Rocket Industry, Peresvet, Russia
Keywords: high-rise stand tests, supersonic nozzle, gas-dynamics tube, turbulence model
Abstract
The influence due to the shape of the expanding part of supersonic nozzles on the gas-dynamic structures formed in the ducts of high-altitude rocket and aerodynamic test benches has been studied. The research was carried out using the means of computational gas dynamics with the example of a model gas-dynamics tube with three replaceable supersonic nozzles having identical throat and outlet-section diameters. For confirming the adequacy of the models and methods used, the calculated values were compared to experimental ones. To this end, a model setup was developed, manufactured, and tested. Air with ambient temperature was used as the working medium. Another goal of the study was to compare the calculations performed with the use of different turbulence models.
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