Self-ignition of a fuel gas escaping into an oxidizing medium

Shock-induced ignition of hydrogen gas during accidental or technical opening of high-pressure tanks

“…They found that ignition occurred even when the surrounding temperature was below the hydrogen autoignition threshold, and, was a result of a sharp jump in the temperature of the combustible mixture caused by diffusion, when the hydrogen surface came into contact with the surrounding oxidizer heated by the primary shock wave. In their paper, Baev, Buzukov, and Shumskii (2000) and Baev, Shumskii, and Yaroslavtsev (1983) surrounding air. Unlike in the experiment conducted by Wolan´ski and Wo´jcicki (1973), they heated hydrogen at room temperature without any shock up to 575 K then poured it into a partly closed tube.…”

Mechanisms of high-pressure hydrogen gas self-ignition in tubes

“…The ignition occurred even when the surrounding temperature was below the hydrogen auto-ignition threshold and, was a result of a sharp jump in the temperature of the combustible mixture caused by diffusion, when the hydrogen surface came into contact with the surrounding oxidizer heated by the primary shock wave. Baev, Shumskii, and Yaroslavtsev (1983), Baev, Buzukov, and Shumskii (2000) investigated self-ignition of hydrogen when it came into contact with the surrounding air. In difference with the experiment of Wolan´ski and Wo´jcicki (1973), they heated hydrogen at room temperature without any shock up to 575 K then released it into a partly closed tube.…”