Chen XF, Sun JH, Lu SX, Chu GQ, Yao LY, Liu Y (2007f) Influence of rarefaction wave on premixed flame structure and propagation behavior. Progress in Natural Science 17(3), 328-333. [In English]

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Keywords:

gas explosion; rarefaction wave; flame propagation; laminar flame; turbulent combustion; temperature; combustion; transition

Abstract: To explore the influence of rarefaction wave on the structure and propagation behavior of the premixed propane/air flame in a rectangle combustion pipe, the techniques of high speed Schlieren photograph method, pressure measurement and so on are used to study the interaction processes between rarefaction wave and flame. Two cases of rarefaction wave-flame interaction were performed in the experiment. The experimental result shows that both the rarefaction waves can cause the flame transition from laminar to turbulent combustion quickly. The cowflow rarefaction wave decreases the flame speed, while the counterflow rarefaction wave leads the flame propagation speed to increasing on the whole, accompanied with sharp vibration.