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Title: A functional form for the energy spectrum parametrizing bottleneck and intermittency effects
Authors: Meyers, Johan ×
Meneveau, C #
Issue Date: 2008
Publisher: Amer Inst Physics
Series Title: Physics of Fluids vol:20
Article number: 065109
Abstract: A functional form for the energy spectrum is proposed, which includes a predissipative bottleneck effect and an intermittency correction. The form contains five parameters for which five constraints are formulated. Three of them are related to the condition that the integrals of the spectrum,E(k)E(k), k2E(k)k2E(k), and k4E(k)k4E(k), should yield appropriate values for total energy, enstrophy, and derivative skewness. Two extra conditions are inferred from the location and height of the intermittency corrected dissipation peak, which is found to be independent of Reynolds number(70<Reλ<1200)(70<Reλ<1200) in high-resolution direct numerical simulations. Good representation of Direct Numerical Simulation (DNS) and experimental data is found for a range of Reynolds numbersReλReλ between 250 and 1200.
ISSN: 1070-6631
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Applied Mechanics and Energy Conversion Section
× corresponding author
# (joint) last author

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