Mixing enhancement in a Bunsen burner with a coil insert, using air as a fl
uid is experimentally investigated. The coil has a ratio of pitch to the tu
be inside diameter (p/D) as 1.0 and the ratio of coil diameter to the tube
inside diameter (d/D) is 0.17. The results show that a coil insert with cer
tain configurations can be used as a good mixing device. (C) 2000 Elsevier
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