Abstract
An investigation into the stabilization of flames on unconfined fuel sprays has been carried out. A simple theoretical model has been set up and analysed on the basis that the controlling fuel/ air mixture ratio for stability is produced by partial drop evaporation in the flame front and air entrained into the spray. The manner in which the conditions for blow-out varied with fuel supply pressure and ambient air velocity was examined and it was found that flame stability increased with drop size. A theoretically derived expression has been used to correlate the position of the flame front with the local air velocity and a characteristic drop diameter.
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