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Scaling in buoyancy-driven turbulent premixed flames

✍ Scribed by Alexei M Khokhlov; Elaine S Oran; J.Craig Wheeler

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
735 KB
Volume
105
Category
Article
ISSN
0010-2180

No coin nor oath required. For personal study only.

✦ Synopsis

A scaling law is proposed that gives the steady-state turbulent flame velocity in the regime where the flame is thin compared with the largest scale of the turbulence, diffusion effects are small compared to the fluid dynamics effects, and the turbulence is driven by the Rayleigh-Taylor instability in a gravitational field. This is the regime where the fluid dynamic effects dominate diffusion. These conditions exist in premixed hydrocarbon flames approaching the flammability limits and astrophysical objects, such as supernovae. It is proposed that laboratory combustion experiments could be used to calibrate the turbulence model for supernova explosions.

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