Johns Hopkins Turbulence Databases

Dataset description

Forced Isotropic Turbulence Dataset on 4096³ Grid:

Simulation data provenance: Georgia Tech DNS code (see README-isotropic4096 for more details).

• Direct numerical simulation (DNS) using 4096³ nodes.
• Navier-Stokes is solved using pseudo-spectral method.
• Time integration uses second-order Runge-Kutta.
• The simulation is de-aliased using phase-shifting and truncation.
• Energy is injected by keeping the energy density in the lowest wavenumber modes prescribed following the approach of Donzis & Yeung.
• After the simulation has reached a statistical stationary state, a frame of data, which includes the 3 components of the velocity vector (but not the pressure for this dataset), are generated and written in files that can be accessed directly by the database (FileDB system)..
• Domain: 2π × 2π × 2π
• Grid: 4096³
• Viscosity ν = 1.732 × 10^-4
• Number of snapshots available: 1
• RMS velocity: u' = (2k/3)^1/2 = 1.56853
• Reynolds number Re_λ= 610.57
• Kolmogorov scale η = 1.3844 × 10^-3
• <ε>L₁/u'³ = 0.51
• GetPosition is not implemented for this dataset.