Gaseous flame in the reverse vortex

Applicability and efficiency of the reverse vortex stabilisation of gaseous flame was investigated. Burning inside the model combustion chamber is described when different proportions of fuel and oxidant are used. It is shown that if the conventional direct vortex method of flame stabilisation is changed by the stabilisation using the reverse vortex, the thermal efficiency of the uncooled combustion chamber of $\sim 2$ kWt power without heat insulation increases by $\approx 40\%$. The obtained data is compared with the cited results of numerical simulation of gas flow and temperature fields in the MW plasma torch of conventional and reverse vortex scheme. When the reverse vortex flow is used, gas-dynamic compression of the high-temperature zone results in effective thermal insulation of the walls of gas-flame and plasma systems and practically suppresses the correspondent energy losses.