in collaboration with the CCSE/LBL group.
We are presently running two- and three-dimensional simulations of reacting rising bubbles. These begin as a spherical flame, and as it rises due to bouyancy, a vortical flow develops around it. The sphere changes into a torus and this further wrinkles due to instabilities. All the while, this continues to burn, and the mass of the bubble is increases to many times the initial mass.
These calculations resolve the thermal width of the flame -- no flame model is used. On the right is a time sequence of the three-dimensional calculation, showing the bubble every 2.5 x 10-4 s. Below, we see the two-dimensional flame at 10-3 s, for comparison.
more information coming soon...
last updated 28 Oct. 2004
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