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Indexed by:期刊论文

Date of Publication:2018-07-01

Journal:JOURNAL OF SPACECRAFT AND ROCKETS

Included Journals:SCIE

Volume:55

Issue:4

Page Number:928-935

ISSN No.:0022-4650

Abstract:To improve the understanding of the lateral jet, this paper reports the computational fluid dynamics simulations of a cone-cylinder-flare model with lateral jet control, especially with regard to the interaction of a cold- or hot-gas jet with a supersonic crossflow. The Spalart-Allmaras turbulence model is used to solve the three-dimensional compressible Navier-Stokes equations, and the methodology is first validated by comparing the numerical results with the wind-tunnel data. The predicted axial pressure coefficient profiles are acceptably accurate with the experimental data. However, in the case of a hot-gas jet without considering the chemical reaction, there is a significant error at the separation point compared with the experimental result. Using a simplified reaction mechanism, the chemical reaction is carried out in the hot-gas jet simulation. The numerical results show that the separation of the boundary layer takes place at a distance of eight times of the nozzle diameter, which is very close to the experimental result. The aforementioned results indicate that, in the simulation of lateral jet interference, it is necessary to consider the chemical reaction, which can improve the numerical accuracy of predicting both the aerodynamics performance and flow structures.