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Leapfrogging of several (4) smoke rings (different speed) at medium Reynolds number |
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Computational details
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Short description and remarks
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Visualization
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Short description and remarks
Several smoke rings are driven by given pressure drops from
left to right, while at other times the external forces for
driving the flow are almost in equilibrium. The following "puffs"
reach and almost penetrate the earlier ones which also accelerate
during this game: all chase each other!
The main problem with visualizing this dynamic behaviour is
due to the dominant diffusive terms. While "absolute" quantities
as pressure, streamfunction and velocity plots do not show
the physical movement, only tracing of concentration may
provide some helpful illustration. However, due to the strong
diffusion, we had to rescale the concentration in each step
which explains the "funny colors" and the "funny structure"
of the smoke rings. For this kind of flow simulation,
definitively a particle tracing is the best visualization
tool!!!
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Visualization
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Please send any comments and suggestions to: featflow@featflow.de |