Analytical solutions of the energy equation are obtained showing stron
g effects of flow swirl: (sr) significant increase in heat exchange, (
b) heal isolation of a wall, (c) formation of temperature fronts and (
d) flame stabilization in vortex burners. Two problems are studied in
detail: (i) a point source of heat at the origin of a swirling jet sub
merged in an infinite fluid and (ii) heat transfer from an isothermal
wall near a swirling jet. The paper explains the physical mechanism of
effects (a-d) and shows the means to control them. (C) 1998 Elsevier
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