Propagation rate of growing interfaces in stirred fluids
Journal Article
·
· Physical Review Letters; (United States)
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551-0969 (United States)
The overall propagation rate of growing interfaces subject to weak random stirring is investigated, based on a variant of the Kardar-Parisi-Zhang equation. Scaling analysis, supported by computations, indicates that random stirring increases the overall propagation rate in proportion to 4/3 power of the ratio of stirring rate to growth rate. The generally assumed quadratic dependence on this ratio is valid only for special cases such as periodic flow. On this basis, a modified turbulent-flame speed formula is proposed. Implications concerning interpretation of measurements are noted.
- OSTI ID:
- 7235431
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:7; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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