The Ignition of Methane-Oxygen Mixture by Shock Wave

Abstract
Using the shock tube, the authors measured the minimum ignition pressure P1 of the reservoir for the methane-oxygen mixture of various pressure P0 and various compositions, and obtained the following results. 1) The higher the value of P0, the easier the ignition. 2) The concentration range of methane in the gaseous mixture for shock ignition is 3—42%, and the minimum value of P1/P0 or the ignition temperature, was found at a gaseous mixture of about 20—25% methane. 3) The ignition easier is by the use of the shock tube with conical end rather than with the plane end. 4) Shock ignition temperatures estimated indirectly were found to be remarkably lower than the thermal ignition temperature.

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