An error occurred while loading the file. Please try again.
-
Christian Godenschwager authored736c4e0d
Forked from
waLBerla / waLBerla
957 commits behind the upstream repository.
Test2D.dat 10.34 KiB
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// //
// Schaefer Turek Benchmark //
// //
// Reference: Schaefer, M. and Turek, S. (1996) 'Benchmark computations of laminar flow around a cylinder (with support //
// by F. Durst, E. Krause and R. Rannacher), in E. Hirschel (Ed.): Flow Simulation with High-Performance //
// Computers II. DFG Priority Research Program Results 1993-1995, No. 52 in Notes Numer, Fluid Mech., //
// pp.547-566, Vieweg, Weisbaden. //
// //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
SchaeferTurek
{
// 3 different modes of operation:
// -------------------------------
// NO sbffile and NO saveToFile -> domain decomposition is created on the fly and simulation is run
// sbffile and NO saveToFile -> domain decomposition is loaded from file and simulation is run
// sbffile and saveToFile -> domain decomposition is created and saved to file (simulation is NOT run!)
// sbffile grid.sbf;
// blocksPerProcess 4;
// saveToFile; // does not require additional arguments
outputSetupForest true; // generates: "domain_decomposition.vtk" and "process_distribution.csv"
//////////////////////////////
// GENERAL SIMULATION SPECS //
//////////////////////////////
memoryPerCell 153; // in bytes
processMemoryLimit 2048; // in MiB !
yzBlocks 3; // blocks in y- and z-direction [2D: only 1 block in z-direction]
// The number of blocks in x-direction is calculated from: H, L, yzBlocks, xCells, and yzCells.
xCells 32; // number of cells in x-direction for each block
yzCells 32; // number of cells in y- and z-direction for each block [2D: only affects y-direction]
H 0.41; // [m]
L 2.20; // [m] (2.5 [3D], 2.2 [2D])
strictlyObeyL true; // true = outflow will be located exactly at "L", false = outflow might be slightly further away than "L"
cylinderxPosition 0.2; // [m] (0.5 [3D], 0.2 [2D])
cylinderyPosition 0.2; // [m]
cylinderRadius 0.05; // [m]
circularCrossSection true; // true = obstacle is a true cylinder, false = obstacle is a box
kinViscosity 0.001; // [m^2/s]
rho 1; // [kg/m^3]
inflowVelocity 0.3; // [m/s] (0.45 [3D], 2.25 [3D], 0.3 [2D], 1.5 [2D])
raisingTime 1; // [s]
sinPeriod 0; // [s] (0 == no sinus term)
obstacleBoundary 0; // 0 = staircase, 1 = curved
outletType 3; // 0 = pressure, 1 = outlet (2/1), 2 = outlet (4/3)
initWithVelocity false; // at the beginning of the simulation everything is set to: ( 4 * inflowVelocity ) / 9 [3D] or ( 2 * inflowVelocity ) / 3 [2D]
evaluateForceComponents false; // might be nice for debugging purposes - but: involves calculation of median and stdDeviation for
// potentially a lot of cells in parallel -> can severely decrease performance
nbrOfEvaluationPointsForCoefficientExtremas 100;
evaluatePressure true;
pAlpha < 0.15, 0.2, 0.205 >; // points for evaluating
pOmega < 0.25, 0.2, 0.205 >; // the pressure difference
evaluateStrouhal false; pStrouhal < 0.7, 0.325, 0.205 >; // point used for evaluating the vortex shedding frequency and the Strouhal number
///////////////////////
// WHERE TO REFINE ? //
///////////////////////
useCylinderForRefinement false;
cylinderRefinementLevel 1; // if "useCylinderForRefinement" is true, everything around the cylinder is refined to this level
cylinderRefinementBuffer 0.05; // [m] - additional space around the cylinder that is also guaranteed to be at level "cylinderRefinementLevel"
AABBRefinementSelection
{
// coordinates of AABBs are in [m]
/*
AABB
{
level 2;
AABB [ <0,0,0>, <0.05,0.41,0.41> ];
}
*/
/*
AABB
{
level 1;
AABB [ <0,0,0>, <0.7,0.41,0.41> ];
}
*/
// coordinates of Regions are always in [0,1] -> the entire simulation space is mapped to [ <0,0,0>, <1,1,1> ]
/*
Region
{
level 1;
region [ <0,0,0>, <1,1,1> ];
}
*/
}
////////////////////////////
// RUNNING THE SIMULATION //
////////////////////////////
outerTimeSteps 1; // total number of time steps = outerTimeSteps * innerTimeSteps
innerTimeSteps 1; // For each outer loop, performance data is logged.
evaluationCheckFrequency 10; // 1;
evaluationLogToStream true; // false;
evaluationLogToFile true;
evaluationFilename SchaeferTurek.txt;
MassEvaluation
{
plotFrequency 0;
logFrequency 0;
filename Mass.txt;
}
StabilityChecker
{
checkFrequency 100;
streamOutput false;
vtkOutput true;
vtkBaseFolder stability_check;
vtkBinary true;
vtkLittleEndian true;
vtkMPIIO true;
}
remainingTimeLoggerFrequency 3; // in seconds
vtkBeforeTimeStep true; // false = at the end of time step
logToSqlDB true;
sqlFile simulation.sqlite; // database used for logging the performance and accuracy of the simulation
// logging is done every "innerTimeSteps" time steps
///////////////////////////
// SRT - TRT - MRT setup //
///////////////////////////
omega 1.5;
// magicNumber 0.25; // Used to setup TRT and MRT in case if and only if no additional parameters
// except 'omega' are specified here in the input file. [default: 0.1875]
// lambda_e 1.98; // If "--trt" is used AND 'lambda_e' and 'lambda_d' are both specified here
// lambda_d 1.95; // in the input file then these two parameters are used for setting up TRT.
// Otherwise 'omega' is used to set up TRT.
// Setting up TRT to mimic SRT: set lambda_e and lambda_d to the same value
// If "--mrt" is used AND 's1', 's2', 's4', 's9', 's10', and 's16' are all specified here in the input file
// then these parameters are used for setting up MRT. Otherwise 'omega' is used to set up MRT.
// s1 1.19; // s_e
// s2 1.4; // s_epsilon
// s4 1.2; // s_q
// s9 1.99; // s_nu
// s10 1.4; // s_pi
// s16 1.98; // s_m
// Setting up MRT to mimic SRT: set all parameters to the same value
// Setting up MRT to mimic TRT: set s1, s2, s9, and s10 to lambda_e and s4 and s16 to lambda_d
relaxationParametersLevel 0;
//////////////////
// CHECK AT END //
//////////////////
check false;
checkCDRealAreaLowerBound -1E6; // lower bound for the drag coefficient ("real" cylinder area used for evaluation)
checkCDRealAreaUpperBound 1E6; // upper bound for the drag coefficient ("real" cylinder area used for evaluation)
checkCLRealAreaLowerBound -1E6; // lower bound for the lift coefficient ("real" cylinder area used for evaluation)
checkCLRealAreaUpperBound 1E6; // upper bound for the lift coefficient ("real" cylinder area used for evaluation)
checkCDDiscreteAreaLowerBound -1E6; // lower bound for the drag coefficient ("discrete" cylinder area used for evaluation)
checkCDDiscreteAreaUpperBound 1E6; // upper bound for the drag coefficient ("discrete" cylinder area used for evaluation)
checkCLDiscreteAreaLowerBound -1E6; // lower bound for the lift coefficient ("discrete" cylinder area used for evaluation)
checkCLDiscreteAreaUpperBound 1E6; // upper bound for the lift coefficient ("discrete" cylinder area used for evaluation)
checkPressureDiffLowerBound -1E6; // lower bound for the pressure difference (only checked if "evaluatePressure" is set to true)
checkPressureDiffUpperBound 1E6; // upper bound for the pressure difference (only checked if "evaluatePressure" is set to true)
checkStrouhalNbrRealDLowerBound -1E6; // lower bound for the Strouhal number (only checked if "evaluateStrouhal" is set to true - "real" cylinder diameter used for evaluation)
checkStrouhalNbrRealDUpperBound 1E6; // upper bound for the Strouhal number (only checked if "evaluateStrouhal" is set to true - "real" cylinder diameter used for evaluation)
checkStrouhalNbrDiscreteDLowerBound -1E6; // lower bound for the Strouhal number (only checked if "evaluateStrouhal" is set to true - "discrete" cylinder diameter used for evaluation)
checkStrouhalNbrDiscreteDUpperBound 1E6; // upper bound for the Strouhal number (only checked if "evaluateStrouhal" is set to true - "discrete" cylinder diameter used for evaluation)
}
VTK
{
/*
fluid_field
{
baseFolder vtk;
writeFrequency 33; // -> 30 fps
ghostLayers 1;
AABB_filter_0 {
min < 0, 0, 0.20 >;
max < 2.5, 0.41, 0.21 >;
}
//AABB_filter_0 {
// min < 0.45, 0.15, 0 >;
// max < 0.55, 0.25, 0.41 >;
//}
before_functions {
PDFGhostLayerSync;
}
inclusion_filters {
//FluidFilter;
combine FluidFilter,AABB_filter_0;
}
writers {
VelocityFromPDF;
//VelocityMagnitudeFromPDF;
DensityFromPDF;
//NonEquPart;
//PDF;
}
}
*/
/*
flag_field
{
baseFolder vtk;
writeFrequency 1000000000; // = write once at the beginning
ghostLayers 0;
//AABB_filter_0 {
// min < 0, 0, 0 >;
// max < 300, 1000, 10000000 >;
//}
//inclusion_filters {
// AABB_filter_0;
//}
writers {
FlagField;
}
}
*/
/*
domain_decomposition
{
baseFolder vtk;
writeFrequency 1000000000; // = write once at the beginning
outputDomainDecomposition true;
}
*/
}