Numerical simulation of supersonic turbulent combustion of hydrogen in a stream of hot humid air

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Resumo

The paper presents the results of solving the validation problem of turbulent combustion of a hydrogen jet in a supersonic flow of hot humid air in a symmetrical channel. Special attention is paid to the solution of the system of equations of chemical kinetics, which imposes a significant restriction on the time step, as well as the analysis of kinetic schemes used in the solution. The main computational difficulty is the detailed resolution of the wall region, due to the injection of a hydrogen jet into a turbulent boundary layer, in order to further reproduce experimentally obtained distributions of mole fractions and temperature in the outlet section of the channel, as well as the location of the ignition point.

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Sobre autores

А. Nikonov

Moscow Aviation Institute (National Research University)

Autor responsável pela correspondência
Email: amnikonov@mai.education
Rússia, Moscow

N. Kharchenko

Moscow Aviation Institute (National Research University)

Email: amnikonov@mai.education
Rússia, Moscow

Bibliografia

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2. Fig. 1. Fragment of the calculation grid of a flat channel

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3. Fig. 2. Distribution of the mass fraction of H2O (a) and static temperature (K) in the channel (b); modified Evans–Schäxnayder hydrogen combustion mechanism

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4. Fig. 3. Distribution of mole fractions of gas mixture components (a) and static (T, K) and total temperatures (T0, K) in the outlet section of the channel (b); modified Evans–Schäxnayder hydrogen combustion mechanism

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5. Fig. 4. Distribution of the mass fraction of H2O (a) static temperature (K) in the channel (b); modified Yakimovsky hydrogen combustion mechanism; symbols – experimental data, lines – results of numerical simulation

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6. Fig. 5. Distribution of mole fractions of gas mixture components (a) and static (T, K) and total temperature (T0, K) in the outlet section of the channel (b); modified Yakimovsky hydrogen combustion mechanism; symbols are experimental data, lines are results of numerical simulation

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