Estimating the burning rate of an explosive gas mixture at elevated pressures and temperatures

The flame speed has been estimated from the flow behind a shock wave from recordings of the expansion in the flame focus arising between the shock wave and the combustion front in states transitional between combustion and detonation. The result is close to the difference between the speeds of the shock wave and the mass gas flow in it and greatly exceeds the calculated velocity for a normal flame, which shows that the combustion behind the shock wave is turbulent.