Numerical Investigation of Scaling Properties of Turbulent Premixed Flames

Details Numerical Investigation of Scaling Properties of Turbulent Premixed Flames Numerical Investigation of Scaling Properties of Turbulent Premixed Flames

1997-07-09

arxiv.org/abs/astro-ph/9707108v1

Astronomy and Astrophysics

Astrophysics

16 pages, 5 ps figures included, accepted by Combust. Sci. Tech., also available at http://www.mpa-garching.mpg.de/~jcn/pub_fl

Scientific paper

Gibson scaling and related properties of flame-surface geometry in turbulent premixed combustion are demonstrated using a novel computational model, Deterministic Turbulent Mixing (DTM). In DTM, turbulent advection is represented by a sequence of maps applied to the computational domain. The structure of the mapping sequence incorporates pertinent scaling properties of the turbulent cascade. Here, combustion in Kolmogorov turbulence (kinetic-energy cascade) and in Bolgiano-Obukhov convective turbulence (potential-energy cascade) is simulated. Implications with regard to chemical flames and astrophysical (thermonuclear) flames are noted.

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