Study of the temperature and force effects of supersonic jets of the space rockets on the gas duct of the launch complex during the water supply system operation

Heading: 
Space Energy, Power and Propulsion
1Mochonov, RA, 1Sotnichenko, AV, 1Ivanytskyi, HM, 1Salo, MP
1Yangel Yuzhnoye State Design Office, Dnipro, Ukraine
Space Sci. & Technol. 2020, 26 ;(3):03-19
https://doi.org/10.15407/knit2020.03.003
Publication Language: Russian
Abstract: 
In most modern launch complex of space rockets, water supply systems are used to protect against the flashing of surfaces that are directly affected by high-temperature gas jets. To date, the only possible way to theoretically study the processes of interaction of a supersonic jet of propulsion system with water jets emitted by the collector of the water supply system is a numerical simulation. To study the temperature and force loading of the surfaces under the influence of supersonic jets of the propulsion system, a numerical simulation of the gas-dynamic processes occurring in the duct at the time of the launch of the space rocket was carried out. Two options were considered, with and without water supply. The space rocket “Antares” gas duct was selected as the design model. The mathematical model is based on the equations of dynamics of a two-phase medium. In this case, the gas flow is described by the three-dimensional Navier-Stokes equations, and the modeling of water droplets was carried out using the Lagrange trajectory approach. The studies were performed in the commercial code ANSYS Fluent. As a result of the conducted numerical experiment, data were obtained regarding the effectiveness of reducing the thermal and force effect of supersonic jets on the design of the gas duct when using the water supply system. According to the results of the research, the main recommendations have been formulated. These recommendations may be useful in the development and optimization of the water supply systems of ground complexes of the space rockets.
Keywords: Ansys Fluent, evaporation, flame deflector, Lagrange approach, numerical simulation, supersonic jet, supply water system
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