SOME OBSERVATIONS OF A LARGE, BURNING JET IN CROSS-FLOW

Some results are presented on the temporal evolution of a large jet in crossflow consisting of the burning plume from an unabated oil well d ischarge. The volume rendering approach is used whereby several sequen tial x-y images of the jet are stacked in time, t, to produce an objec t in x-y-t space which can be used to conveniently examine the jet dyn amics. Similar to earlier findings for free jets, the burning jet in c rossflow is seen to consist of a series of large-scale organized struc tures which convect downstream leading to a quasiperiodic flame tip bu rnout. The wake region however is seen to be much less organized. Most surprising is the constant speed of the burning structures as they pr ogress from the jet to crossflow direction. It therefore appears that an underlying organization exists in the jet in crossflow, in spite of its relatively complex, three-dimensional structure.