Scale-by-scale kinetic energy budget near the turbulent/nonturbulent interface
Tomoaki Watanabe, Carlos B. da Silva, Koji Nagata
Abstract
A scale-by-scale energy budget is investigated near the turbulent--nonturbulent interfacial layer with direct numerical simulations of a local turbulent front evolving without mean shear. The forward interscale energy transfer is caused by the velocity gradient in the interface normal direction. The pressure diffusion removes the energy at small scales within the interfacial layer.
Topics & Concepts
TurbulenceKinetic energyTurbulence kinetic energyScale (ratio)MechanicsDiffusionEnergy budgetShear (geology)Front (military)Materials scienceComputational physicsEnvironmental sciencePhysicsMeteorologyThermodynamicsClassical mechanicsComposite materialQuantum mechanicsFluid Dynamics and Turbulent FlowsParticle Dynamics in Fluid FlowsCombustion and flame dynamics