Abstract:
Results of experimental investigations of the flow in a channel with sudden expansion without and with heat supply into a supersonic air flow are presented. Based on processing experimental data on the time evolution of static pressure on the channel walls, the spectral power of oscillations are determined. The analysis reveals an increase in the spectral power of pressure oscillations in the frequency range of 250–400 Hz. The greatest increase in the spectral power is observed in the initial period of the process during ignition and at the end of flame stabilization. In the period corresponding to developed combustion, the peak value of the power spectrum of oscillations decreases, while the range of frequencies is extended to 400–600 Hz.
Citation:
N. N. Fedorova, M. A. Goldfeld, V. V. Pickalov, “Investigation of oscillating regimes in a high-velocity flow with heat supply. I. Experiment”, Fizika Goreniya i Vzryva, 58:5 (2022), 33–43; Combustion, Explosion and Shock Waves, 58:5 (2022), 536–545
This publication is cited in the following 3 articles:
I. R. Vasnev, M. A. Goldfeld, N. N. Fedorova, “Simulation of heating of the sensitive element of the heat flux sensors in a high-velocity flow under variable input conditions”, Thermophys. Aeromech., 30:6 (2024), 967
N. N. Fedorova, “Vliyanie temperaturnogo faktora na pulsiruyuschee gorenie vodoroda v vysokoskorostnom vozdushnom potoke”, Chelyab. fiz.-matem. zhurn., 9:2 (2024), 287–298
N. N. Fedorova, “Numerical simulation of thermal choking of a channel during combustion of a hydrogen-air mixture in a supersonic flow”, Combustion, Explosion and Shock Waves, 59:4 (2023), 402–414
Citation in format AMSBIB
Contact us: