| "controll.txt" file |
parameter description |
########################
### ###
## Controll File for flow-solver ##
### ###
########################
| |
| & R = 287.0 | gas constant |
| & kap = 1.4 | adiapatic index
|
| & TimeIterations = 1000 | number of timeiterations |
| & reload = 1 | 0...new calculation with values of initialization, see below
section "Initialization"
1...loads primitive NS values from stored file
"primVar.bin"
if file not fount --> same operation as reload = 0
|
| & moduloReadControl = 10 | LINARS reloads each Xth timestep "controll.txt" file
0... LINARS doesn't read the controll.txt file during simulation. |
| & moduloWriteConsVar = 10 | LINARS saves each Xth timestep "primVar.bin" file
0... LINARS doesn't save temporary restart files.
|
| constTimeStep = 1.0e-6 |
in the standard "controll.txt" given without a "&" on the left-hand side.
This means LINARS uses the steady flow solver. If you want to use the unsteady flow solver set the
sign "&" at the left-hand side and the dimensional time for each timestep behind the "=" (e.g.: 1e-6s)! Therefore the CFL number below is ignored. |
| & cflOnFinest = 10 | CFL number on finest grid. |
| & cflOnCoarser = 10 | CFL number on coarser grids, if the multigrid solver is used. |
| & TVDonFinest = 1 |
specifies the spacial discretization scheme for the inviscid (EULER) fluxes
0... 1st order accurate interpolation
1... Total Variation Diminishing scheme, 3rd order accurate
2... van Albada lmiter, 2nd order accurate |
| & TVDonCoarser = 1 | If the multigrid solver is usedspacial --> discretization scheme on coarser grids.
|
########################
## Initialization ##
########################
|
if variable "reload" = 0, the flowfield is initialized with the specified values of the primitive variables. |
| & Ptot = 1.013e5 | total pressure |
| & Ttot = 293.150000 | total temperature |
| InVelU = 0.000000 | velocity in x-coordinate |
| InVelV = 0.000000 | velocity in y-coordinate |
| InVelW = 0.000000 | velocity in z-coordinate
|
| & IsQuasi3D = 1 | 0... if a fully 3d simulation
1... if imax, jmax or kmax of each grid block is 1
(see "geom.txt")
!!!You can also use a mixed grid topology of blocks with imax>1,
jmax>1 and kmax>1 and blocks with imax=1, jmax=1 or kmax=1 (quasi 3d) ---> then use
IsQuasi3D = 0
|
########################
## Solver Settings ##
########################
|
|
| & nMultiGrid = 1 | number of multigrid levels, if 1 only finest level and hence no multigrid is used! |
| & nPreIterationsCoarse = 0 | number of pre iterations on coarset level (NS and turbulence model), variable is only used if multigrid>1! |
| & RelaxScheme = 2 | 0... four step Runge-Kutta integration scheme
1... one point implizit Newton-Raphson intergration scheme
(not recommended!)
2... fully implizit Newton-Raphson scheme with Alternating
Direction Implizit solver.
Recommended for steady and unsteady solver! |
| & UnderRelaxParam = 0.5 | variable is used only for implizit solvers, recommended value "0.5" for steady solver. Use ">0.9" for unsteady solver. |
| & NewtonIterations = 1 | number of Newton-Raphson iterations. Use "1" for steady solver and ">1" for unsteady solver. |
| GaussSeidelIterations = 1 | only for one point implizit Newton-Raphson intergration scheme, don't change this value! |
| ModuloGaussSeidel = 1 | only for one point implizit Newton-Raphson intergration scheme, don't change this value!
|
########################
## EULER, VISCOUS,......... ##
########################
|
|
| & UseViscous = 1 |
0...EULER
1...VISCOUS, laminar calculation
2...TURBULENT -> Spalart Allmars
3...TURBULENT -> Wilcox k-omega
4...TURBULENT -> Menter SST k-omega
5...TURBULENT -> Durbin's k-epsilon-v'2-f
6...TURBULENT -> Turbulence Potential Model
use without multigrid solver!
7...TURBULENT -> Laminar Kinetic Energy Model
|
| & DynViscosity = 6.0e-05 |
With "&" on the left-hand side --> constant viscosity in the whole flow domain with specified value.
Without "&" --> dynamic viscosity is calculated by the Sutherland law with specified values in
"grid.cpp" and "definitions.h" source files. |
| & TurbPreIterations = 0 | number of pre-iterations with the specified turbulence model, while the
Navier-Stokes equations are left unaltered (frozen). |
| & TurbReload = 1 | 0... starts turbulence model with standard initialization values
1... loads turbulence values from stored file
"primVarXXX.bin"
if file is present, if not -> same operation as TurbReload = 0
|
| |
|
########################
## Transition Modells ##
########################
|
|
| & UseTransition = 0 |
0... simulation without a transition model
1... Menter's γ-ReΘ transition model,
implementation
is not yet finished, use only with UseViscous = 4
|
| & TransPreIterations = 0 | number of pre-iterations with the specified
transition model, while the Navier-Stokes and the turbulence model equations
are left unaltered (frozen). |
| & TransReload = 1 | 0... starts transition model with standard initialization values
1... loads transition values from stored file "primVarXXX.bin"
if file is present, if not -> same operation as TransReload = 0
|
########################
## Unsteady / Phase Lag ##
########################
|
|
| & PLIFAType = 0 | 0...without
1...pitchratio 1:1, add line "& timeStepsEachPeriod = X"
X=pitch/gridVelocity/constTimeStep!!!
X is an integer value, therefore set first an appropriate
value of X and recalculate the constTimeStep value!
2...phaselaged boundary conditions
|
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|
########################
## Grafik Output ##
########################
| |
| & moduloOutputGr2 = 10 |
0... no output file
X... each Xth timestep LINARS writes the output file,
see 2dOutput.gr2 for a 2d simulation and
field.gr2 for 3d. |
| & moduloOutputGrf = 0 |
0... no output file
X... each Xth timestep LINARS writes the output file,
see XXX.grf |
| & moduloOutputTec = 0 |
0... no output file
X... each Xth timestep LINARS writes the output file,
see tecplot.plt |
| & moduloOutputBoundStatistics = 0 |
0... no output file
X... each Xth timestep LINARS writes the output files for
inlet outlet and wall, see stxSeq... |
| & moduloOutputResid = 2 |
DON'T use 0!!! except you reprogram LINARS
X... each Xth timestep LINARS writes the residuals into the
res_log.txt file. |
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Graz University of Technology