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It is challenging to maintain a stable flame in miniature combustors. In the present work, a mesoscale bluff-body combustor was developed. The flame blow-off limits of CH4/air mixtures were experimentally obtained, which showed that the bluff body can effectively expand the flame stabilization limit. The flame anchoring mechanisms of this mesoscale bluff-body combustor were studied through 3D numerical...
The blow-off limits of CH4/air flames in a mesoscale cavity-combustor under various pressures (P = 1.0–3.0 atm) are investigated numerically. The results show that the flame blow-off limit increases first and then decreases with an increasing pressure. Three typical pressures (P = 1, 2 and 3 atm) are selected to perform numerical analysis with a detailed reaction mechanism. The analysis demonstrates...
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