2000/01/17 by L. Biferale, P. Gualtieri, F. Toschi +1 · 4 citations
Engineering · Environmental Science · Mathematics · Physics and Astronomy · #Classical mechanics #Combustion and flame dynamics #Fluid Dynamics and Turbulent Flows #Geometry #Isotropy #Mathematics #Mechanics #Optics #Physics #Reynolds number #Scaling #Statistical physics #Turbulence #Wind and Air Flow Studies #nlin.CD
paper · pdf · doi:10.1063/1.870431
published in Physics of Fluids 12(7), 1836-1842 (American Institute of Physics) · 21 pages, 8 figure
arxiv created 2000/01/17 · openalex publication_date 2000/07/01 · arxiv updated 2009/11/30 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
Some pressure and pressure-velocity correlations in a direct numerical simulations of a three-dimensional turbulent flow at moderate Reynolds numbers have been analyzed. We have identified a set of pressure-velocity correlations which possess a good scaling behavior. Such a class of pressure-velocity correlations is determined by looking at the energy-balance across any sub-volume of the flow. According to our analysis, pressure scaling is determined by the dimensional assumption that pressure behaves as a “velocity squared,” unless finite-Reynolds effects are overwhelming. The SO(3) decompositions of pressure structure functions has also been applied in order to investigate anisotropic effects on the pressure scaling.