Autoturbulization of gas flames: Analysis of experimental results

A spherically propagating flame is a unique object for experimental and the oretical study of the phenomena of spontaneous instability and autoturbuliz ation of flames. It is experimentally established that the propagation of a spherical flame results in the limiting self-similar turbulization mode. T he most probable scenario of this mode involves the development of a large- scale turbulence caused by Taylor instability. In this case, the accelerati on of the initial flame, the rate of dissipation of turbulent energy, and i ts spectral boundary are defined by combustion. Further progress in the stu dy of autoturbulization seems to be associated with more precise measuremen ts of the flame structure and of the mechanism of its formation under vario us conditions. These data will make it possible to compare and estimate the adequacy of alternative theoretical interpretations.