Gas Jet Interaction with Supersonic Cross Flow in a Channel

The paper presents the results of numerical simulation of the 3D flows in a plane channel with the abrupt expansion. Sonic hydrogen jets are supplied from two circle orifices located opposite each other on the channel walls before the backward-facing step. The numerical simulations are carried out under the conditions of experiments performed at the hot-shot wind tunnel IT-302M ITAM SB RAS for the following flow parameters: Mach number at the entrance of the channel M = 3.84, the total temperature T0 = 1715 K, and the total pressure P0 = 6.5 MPa. Calculations were performed with a change in the jet supply pressure from 0.4 to 3.6 MPa, which ensures the variation in the jet-to-crossflow momentum flux ratio in the range of J = 0.7 ÷ 6. Mathematical modeling was performed in ANSYS Fluent based on the Reynolds-Averaged Navier-Stokes equations supplemented by the k-ω SST turbulence model. A comparison of the calculated and experimental data on the flow structure, as well as the static pressure distributions on the walls, indicates a satisfactory agreement. The calculated results made it possible to obtain a clearer understanding of the 3D flow structure in the channel and reveal the influence of the injection pressure on the level of mixing.

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Gas Jet Interaction with Supersonic Cross Flow in a Channel

Cited by 5 publications

References 11 publications

Numerical simulation of argon injection into supersonic crossflow at various jet-to-freestream momentum flux ratios

Numerical simulation of argon injection into supersonic crossflow at various jet-to-freestream momentum flux ratios

Study of coherent structures effect on mixing characteristics of jet injection into supersonic crossflow

Influence of the relative momentum flux ratio on the mixing of hydrogen jets in an M=4 crossflow

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