New study reveals faster, more stable flame propagation in heavy oil combustion
The study looked at how flames spread when burning heavy oil with different oxygen levels. They found that the ignition process has three stages: pro-ignition, mid-ignition, and end-ignition. The flame speed was faster with 29% oxygen compared to 21%, and faster in oxygen/nitrogen than in oxygen/carbon dioxide. During stable burning, the flame structure changed and sometimes went out.