Turbulence statistics for an unsteady lock-exchange gravity current during the slumping phase.
dataset
Datasets usually provide raw data for analysis. This raw data often comes in spreadsheet form, but can be any collection of data, on which analysis can be performed.
Data available at t =12.5 s after start of the computation (t_{adim} = 29.1). The data are saved in the range -0.58 m < x < 2.895 m in the x-direction which encompasses the whole length of the current at this time step.
. List of files:
- data_t291_vtk.tar.gz
-> Contains the 200 simulation results at t_{adim} = 29.1 used for the statistics calculation. The data are in dimensional form
- fields_turbulence_statistics_ensembleAveraging_t29.1
-> Corresponding ensemble- and spanwise-averaged statistics
. Scaling quantities for non-dimensionalisation:
- Velocity: u_{b} = 0.349 m/s
- Length: H/2 = 0.15 m
- Time: t_{0} = (H/2)/u_{b} = 0.43 s
. Initial computational domain size:
- Lock length: L_{x.lock} = 0.58 m
- Channel length: L_{x,channel} = 5 m
- Domain height: H = 0.3 m
- Domain width: L_{z} = 0.4 m
- Inclination: tan(a) = 2%
. Physical conditions:
- density light fluid: rho_{0} = 997.3 kg/m^{3}
- density dense fluid: rho_{1} = 1080 kg/m^{3}
- kinematic viscosity: nu = 8.7327 10^{-7} m^{2}/s
- density diffusivity: kappa = 8.7327 10^{-7} m^{2}/s
- gravity vector: g = 9.81 m/s^{2}
- Reynolds number: Re_{b} = u_{b}(H/2)/nu = 60 000
- Schmidt number: Sc = nu/kappa = 1
. Grid resolution
- Uniform mesh spacing: delta = 0.0054 m
- first vertical mesh spacing at bottom wall dy_{1} = 0.0002 m
. Initial conditions:
- -0.45 < u_{i}/u_{b} < 0.45 and m = 1 for x < 0
. Boundary conditions
- Bottom: no slip wall
- side walls: symmetry
- Front, back and top walls: slip walls