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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
