Flame characteristics influenced by the angle of burners for non-premixed C3H8/air

The study of micro flame characteristics is an essential basis for developing combustors. Therefore, the non-premixed C3H8-air were experimentally studied. Flame length, shape, and blow-out limit studied by varying equivalence ratio, ?, inlet velocity C3H8-air, v, angles burner. results showed ignited had three combustion states: no flame, a stable flame. Whether could form mainly depended on ? v. In addition, total lengths increased with increase v firstly. However, when to certain value, independent only affected Moreover, length shape angle Instead, was found be associated solely but not burner angle. findings this provided fundamental data development high-efficiency