Abstract
A theoretical model is proposed for performing self-consistent calculations of the entire evolution of a spark discharge and the subsequent cooling of the postdischarge channel and dielectric recovery, taking into account the generation and dissipation of an intense turbulent flow in an after-spark channel. Classical cascade and noncascade mechanisms of a turbulence dissipation are discussed. The stabilizing effect of the continuous residual electric current on the plasma cooling in the channel is analyzed. The results for computed rate of restoration of dielectric strength are compared with known experiments
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