Dataset descriptions

Forced isotropic turbulence:

• Direct numerical simulation (DNS) using 1,024³ nodes.
• Navier-Stokes is solved using pseudo-spectral method.
• Energy is injected by keeping constant the total energy in shells shuch that |k| is less or equal to 2.
• After the simulation has reached a statistical stationary state, 1,024 frames of data with 3 velocity components and pressure are stored in the database. Extra time frames at the beginnning and at the end have been added to be used for time-interpolations.
• The Taylor-scale Reynolds number fluctuates around R_λ~ 433
• There is one dataset ("coarse") with 1024 timesteps available, for time t between 0 and 2.048 (the frames are stored at every 10 time-steps of the DNS). Intermediate times can be queried using time-interpolation.
• There is another dataset ("fine") that stores every single time-step of the DNS, for testing purposes. Times available are for t between 0.0002 and 0.0198),
• More details about the DNS are provided in the accompanying README document
• A table with the time history of the total kinetic energy and Taylor-scale Reynolds number as function of time can be downloaded from this text file.