V形稳焰体低速油雾燃烧对比实验研究

Contrast Experimental Research on V-Form Flame Holder in Low-Speed Oil Mist Burning

为了判断钝体及开缝钝体火焰稳定性和燃烧性能优劣,在常压低速实验台架上,进行了两种类型钝体的油雾燃烧对比实验,结果表明,在相同条件下,不开缝三角形钝体燃烧性能要优于不开缝流线型钝体;在开缝情况下,如果选择合适的缝宽比(δ/B=13.3%),开缝三角形钝体燃烧性能依然优于开缝流线型钝体,而在缝宽比较大的情况下(δ/B=28.9%),得出结论相反.

In order to determine the flame stability and combustion performance of bluff body and slitted bluff body, oil mist combustion experiment was conducted on an atmospheric low-speed experimental platform to compare the two types of bluff body, which were streamlined V-form added straight channel and triangle V-form added straight channel. Results show that under the same condition, nonslit triangle bluff body burns better than nonslit streamlined bluff body. It is also shown that slitted triangular bluff body is still better than the slitted streamlined bluff body in combustion performance if the ratio of slit to width is appropriately selected （δ/B = 13.3%）. In the case of relatively large ratio of slit to width （ δ/B -- 28.9%）, the opposite conclusion is obtained, which is that slitted streamlined bluff body is better than the slitted triangular one in combustion performance.