3D shear-layer driven cavity flow with forcing term at $Re_{L_c}= 7826$
Simulation settings
2D sketch
Referential : cartesian geometry
axes :
origin :
$x_0= 0$ : upstream edge of the cavity
$y_0= 0$ : upstream edge of the cavity
$z_0= 0$ : upstream edge of the cavity, at the mid-span location
Reference scales
Density : mass density of the fluid ($\rho_0$)
Length : cavity length ($L_c$)
Velocity : inlet bulk velocity ($U_i$)
Dynamic viscosity : dynamic viscosity of the fluid ($\mu_0$)
Reynolds number : $Re_{L_c}= \frac{\rho_0.U_i.L_c}{\mu_0}= 7826$
Non-dimensionalised data
velocity : $U^*=\frac{U}{U_i}$
density : $\rho^*= \rho/\rho_0= 1$
coordinates : $x*=\frac{x}{L_c}$, $y^*=\frac{y}{L_c}$ , $z^*=\frac{z}{L_c}$
Computational domain
Domain scope
Downstream direction(x) : $L^*= 4.0$
Normal direction (y) : $H_t^*= 1.25$
Spanwise direction (z) : $l^*= 1.0$
upstream vein length : $L_u^*= 0.5$
cavity height : $H_c^*= 0.5$
Boundary conditions
Inlet : Blasius' profile at $X_{in}^*= -0.5$. Boundary layer thickness $\delta^*= 8.75 \, 10^{-2}$
Outlet : Orlansky's type at $X_{out}^*= 3.5$
Wall conditions : floor and cavity walls
Periodicity : lateral ends of the domain (spanwise direction)
Symmetry plan : top of the domain
Spatial resolution
Forcing term modeling
Location : In front of the uptream edge of cavity
Zone area : brick volume : $0.1 \times 7.5 \, 10^{-3} \times 1$ , center located at : ($-0.05, 3.75 \,10^{-3},0$)
forcing term modeled with the pseudo-penalty approach (Pasquetti et al., Applied Numerical Mathematics 58 (2008))
force applied in the zone area defined as : $\vec{f}= \frac{U_0-U(i,j)}{\tau}$
$\tau \approx \delta t$ (the numerical time step)
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Data features
Time series from probes
Physical quantities : velocity components along x, y and z directions (u,v,w) and pressure (p)
11 probes
Time step= 0.0525 time unit
Time range : 25.02 to 259.96 time units
Locations (In vertical mid-plan at $z=0.0$)
Xi=0.2 , Xj= -0.3 , Xk= 0.0
Xi=0.5 , Xj= -0.3 , Xk= 0.0
Xi=0.8 , Xj= -0.3 , Xk= 0.0
Xi=0.1 , Xj= 0.05 , Xk= 0.0
Xi=0.5 , Xj= 0.05 , Xk= 0.0
Xi=0.9 , Xj= 0.05 , Xk= 0.0
Xi=1.0 , Xj= 0.05 , Xk= 0.0
File name (per physical quantity) : x_ins_yyyyy.d with x= u,v,w,p and 'yyyyy' the MPI subdomain ID
3D snapshots
Instantaneous fields : velocity components in x, y and z directions (U,V,W) and pressure (P)
Recording rate : 0.25 time unit
Time range from from 210.0 to 260.0 time units
File name : res_xxxxx_yyyyyyy.d (xxxxx : MPI subdomain ID, yyyyyyy : Time ID)
MPI subdomain ID: 0
Time ID : from 39 to 239
2D slices
Instantaneous fields : velocity components in x, y and z directions (U,V,W) and pressure (P)
Recording rate : 0.05 time units
Time range from from 210 to 260 time units
File name : slice_n_idir_xxxxx_yyyyyyy.d (n : slice number ID, idir : normal orientation= 1: x(i), 2: y(j), 3: z(k), xxxxx : MPI subdomain ID, yyyyyyy : Time ID)
MPI subdomain ID: 0
Time ID : from 1 to 1001
8 slices
slice ID : 1 - normal orientation : spanwise - location : $z=-3.390625 \,10^{-2}$
slice ID : 2 - normal orientation : spanwise - location : $z=-2.234375 \,10^{-2}$
slice ID : 3 - normal orientation : spanwise - location : $z=-7.8125 \,10^{-2}$
slice ID : 4 - normal orientation : spanwise - location : $z=7.8125 \,10^{-2}$
slice ID : 5 - normal orientation : spanwise - location : $z=2.234375 \,10^{-2}$
slice ID : 6 - normal orientation : spanwise - location : $z=3.390625 \,10^{-2}$
slice ID : 7 - normal orientation : normal - location : $y=-0.25$
slice ID : 8 - normal orientation : normal - location : $y=0.03$
Statistics
fields : (i,j : indexes of direction x, y or z)
Mean fields of velocity components (<Ui>) and pressure (<P>)
Mean fields of quadratic quantities (<P2>, <UiUj>)
Time average computation
Time startup = 210.0 time units
Time range per file = 50.0 time units
Total time range from 180.0 to 510.0 time units
file name : rst_xxxxx_yyyyyyy.d (xxxxx : MPI subdomain ID, yyyyyyy : Time ID)
MPI subdomain ID : 0
Time ID : 1
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Database organisation
Data size : ~ 8.6 Gb
Main directory : /vol/DATABASE_MECA/DATABASE_CAVITY3D_R2_RE7826_PER1.0_DNS/FORCINGTERM
For more details about files, see the wiki doc of Sunfluidh
Directories & files
/GRID : contains all ASCII files about grid setup
input data file : data_meshgen.d
report on grid features : report_meshgen.d
grid files for sunfluidh: maillx.d, mailly.d, maillz.d
check files (ASCII) : check_mesh_I.d,check_mesh_J.d,check_mesh_K.d
(3 columns : indices, cell-face coordinates, cell size)
/DATASETUP : ASCII files
input data file for sunfluidh : input3d.dat
velocity profile (Blasius' boundary layer) at the inlet : inlet_velocity_profile.dat
/TIMESERIES : contains time series recorded over the time range [200,513.3]
ASCII files : x_ins_00000_full.d with x= u,v,w,p
/SNAPSHOTS : snapshots binary files res_xxxxx_yyyyyyy.d
/STATISTICS : statistics binary files files rst_xxxxx_yyyyyyy.d
/RESTART_AR : backup/restart archive save.tar at 260.0 time units
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