Scale dependence and cross-scale transfer of kinetic energy in compressible hydrodynamic turbulence at moderate Reynolds numbers
Petr Hellinger, Andrea Verdini, Simone Landi, Emanuele Papini, Luca Franci, Lorenzo Matteini
Abstract
Compressible isotropic spectral transfer and Karman-Howarth-Monin equations equivalently quantify different processes in weakly and moderately compressible direct simulations of decaying hydrodynamic turbulence with moderate Reynolds numbers. The simulation results show that pressure dilatation does not lead to a net exchange between the kinetic and internal energies but that it may lead to a cross-scale energy transfer of the kinetic energy.
Topics & Concepts
TurbulenceKinetic energyReynolds numberCompressibilityPhysicsTurbulence kinetic energyMechanicsIsotropyReynolds stressReynolds decompositionScale (ratio)K-epsilon turbulence modelClassical mechanicsK-omega turbulence modelEnergy transferThermodynamicsCompressible flowStatistical physicsDirect numerical simulationReynolds-averaged Navier–Stokes equationsHomogeneous isotropic turbulenceEnergy (signal processing)Reynolds stress equation modelMagnetic Reynolds numberMagnetohydrodynamic turbulenceTurbulence modelingDissipationFluid Dynamics and Turbulent FlowsCombustion and flame dynamicsComputational Fluid Dynamics and Aerodynamics