Volume 35, Number 6, August III 1996
|Page(s)||439 - 444|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Transition from Euclidean to fractal forms within a scale-covariant process: a turbulent combustion study
IRPHE, Faculté de Saint-Jérome - Case 252, 13397 Marseille, France
Accepted: 1 July 1996
Multiscale flame fronts are generated by the combustion of turbulent flows. Whereas most wrinkled fronts look fractal in a classical scale analysis, the evolution of their geometry in scale space reveals that they definitely stand part-way between the Euclidean and the fractal regimes. This intermediate domain is studied by exploiting the scale-covariance of geometry formation. An iterative evolution of front roughness from scale to scale is derived. It corresponds to a deterministic evolution of geometry from the Euclidean to the fractal regime which reveals a universal feature of this transition.
PACS: 64.60.Ak – Renormalization-group, fractal, and percolation studies of phase transitions / 47.70.Fw – Chemically reactive flows
© EDP Sciences, 1996
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