Abstract:
The control of combustion by throttling jets in a two-section channel with high-velocity flow has been studied numerically. Pulses of the first throttling jet are used to produce intense transonic combustion of hydrocarbon fuel in the first section. Side fuel supply is applied after the switching-off of the first jet to maintain the combustion mode before the channel expansion. The completeness of fuel combustion in the second section is increased using a second throttling jet. The Reynolds-averaged Navier–Stokes equations closed by the $k$–$\varepsilon$ turbulence model are solved. Combustion was modeled by the overall reaction. A pulsating mode of hydrogen combustion in the second section when exposed to the cold throttling jet was established. The influence of this jet on the completeness of hydrogen combustion was studied.
