Dynamic Phase Alignment in Navier-Stokes Turbulence
arXiv:2104.13518 · doi:10.1103/PhysRevLett.127.274501
Abstract
In Navier-Stokes turbulence, energy and helicity injected at large scales are subject to a joint direct cascade, with both quantities exhibiting a spectral scaling . We demonstrate via direct numerical simulations that the two cascades are compatible due to the existence of a strong scale-dependent phase alignment between velocity and vorticity fluctuations, with the phase alignment angle scaling as .
References in corpus (21)
- Cascades and transitions in turbulent flows
- The Joint Cascade of Energy and Helicity in Three-Dimensional Turbulence
- Benchmarking and scaling studies of a pseudospectral code Tarang for turbulence simulations
- Intermittency in the Joint Cascade of Energy and Helicity
- Scaling of a Fast Fourier Transform and a Pseudo-spectral Fluid Solver up to 196608 cores
- Hindered energy cascade in highly helical isotropic turbulence
- Helically Decomposed Turbulence
- Energy transfer in turbulence under rotation
- Spectral Modeling of Turbulent Flows and the Role of Helicity
- Energy Cascade and Intermittency in Helically Decomposed Navier-Stokes Equations
- Effect of helicity and rotation on the free decay of turbulent flows
- Role of helicity for large- and small-scale turbulent fluctuations
- Inverse cascade of energy in helical turbulence
- Dual channels of helicity cascade in turbulent flows
- Inverse energy cascade in nonlocal helical shellmodels of turbulence
- Dynamic Phase Alignment in Inertial Alfven Turbulence
- Helicity statistics in homogeneous and isotropic turbulence and turbulence models
- Effects of helicity on dissipation in homogeneous box turbulence
- A closure theory for the split energy-helicity cascades in homogeneous isotropic homochiral turbulence
- Helicoidal particles in turbulent flows with multi-scale helical injection
- Passive scalars: mixing, diffusion and intermittency in helical and non-helical rotating turbulence