The turbulization processes of blown electric arc discharges are considered. It is shown that in high-temperature media the specific turbulization can develop. The source of energy of turbulent instabilities is the enthrall of overheated region owing to formation of random thermal nozzles, when internal energy is much higher than kinetic energy of the flow. The non dimensional number for turbulent heat transfer in electric arcs in derived. Correlations of current-voltage characteristics have shown that the turbulent heat transfer is essential in cross-and longitudinally-blown arcs. The measurements of radiation intensity pulsations in arcs, clown by different gases, are in fair agreement with data of correlation analysis.
