DIMOTAKIS, P. E. 1997 "Non-premixed hydrocarbon flame," Nonlinearity 10, 1-2.

Cover illustration: Non-premixed hydrocarbon flame

This year's cover illustration, reproduced here as figure 1, depicts an image formed by a short time (1/1000 s) exposure of a non-premixed hydrocarbon flame. The flow is driven by buoyancy forces generated by the density difference from the combustion heat released and resulting temperature rise. The Reynolds number for this buoyancy-induced, turbulent flow is relatively low, estimated at a few thousand.

Fig. 1. Non-premixed hydrocarbon flame. 1971 Paul E Dimotakis.