Monotone Slowdown of Turbulent Flame Speed under Curvature
Prior state unknown→disproved
within the curvature G-equation model, in three dimensions
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differential-equations / Partial differential equations
Monotone Slowdown of Turbulent Flame Speed under Curvature
Curvature is expected to smooth flame-front wrinkles and so reduce turbulent flame speed, and in two-dimensional shear flows this was proved. In three dimensions it fails: there is a smooth periodic shear flow for which introducing Markstein curvature diffusivity increases the effective flame speed predicted by the level-set G-equation.
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Curvature is expected to smooth flame-front wrinkles and so reduce turbulent flame speed, and in two-dimensional shear flows this was proved. In three dimensions it fails: there is a smooth periodic shear flow for which introducing Markstein curvature diffusivity increases the effective flame speed predicted by the level-set G-equation.
within the curvature G-equation model, in three dimensions
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