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-rw-r--r--apps/adrian/cylinder2d/cylinder2d.cpp33
1 files changed, 15 insertions, 18 deletions
diff --git a/apps/adrian/cylinder2d/cylinder2d.cpp b/apps/adrian/cylinder2d/cylinder2d.cpp
index 066bb6f..5b67408 100644
--- a/apps/adrian/cylinder2d/cylinder2d.cpp
+++ b/apps/adrian/cylinder2d/cylinder2d.cpp
@@ -38,21 +38,21 @@ typedef double T;
/// Setup geometry relative to cylinder diameter as defined by [SchaeferTurek96]
const T cylinderD = 0.1;
-const int N = 5; // resolution of the cylinder
+const int N = 10; // resolution of the cylinder
const T deltaR = cylinderD / N; // coarse lattice spacing
const T lx = 22*cylinderD + deltaR; // length of the channel
const T ly = 4.1*cylinderD + deltaR; // height of the channel
const T cylinderX = 2*cylinderD;
const T cylinderY = 2*cylinderD + deltaR/2;
-const T Re = 20.; // Reynolds number
+const T Re = 100.; // Reynolds number
const T tau = 0.51; // relaxation time
const T maxPhysT = 16.; // max. simulation time in s, SI unit
const Characteristics<T> PhysCharacteristics(
0.1, // char. phys. length
- 0.2, // char. phys. velocity
- 0.1*0.2/Re, // phsy. kinematic viscosity
+ 1.0, // char. phys. velocity
+ 0.1/Re, // phsy. kinematic viscosity
1.0); // char. phys. density
void prepareGeometry(Grid2D<T,DESCRIPTOR>& grid, Vector<T,2> origin, Vector<T,2> extend)
@@ -143,19 +143,19 @@ void prepareLattice(Grid2D<T,DESCRIPTOR>& grid)
sLattice.defineDynamics(sGeometry, 0, &instances::getNoDynamics<T,DESCRIPTOR>());
sLattice.defineDynamics(sGeometry, 1, &bulkDynamics); // bulk
- sLattice.defineDynamics(sGeometry, 2, &instances::getBounceBack<T,DESCRIPTOR>()); // walls
+ sLattice.defineDynamics(sGeometry, 2, &bulkDynamics); // walls
sLattice.defineDynamics(sGeometry, 3, &bulkDynamics); // inflow
sLattice.defineDynamics(sGeometry, 4, &bulkDynamics); // outflow
- sLattice.defineDynamics(sGeometry, 5, &bulkDynamics); // cylinder
+ sLattice.defineDynamics(sGeometry, 5, &instances::getBounceBack<T,DESCRIPTOR>()); // cylinder
+ sBoundaryCondition.addVelocityBoundary(sGeometry, 2, omega);
sBoundaryCondition.addVelocityBoundary(sGeometry, 3, omega);
sBoundaryCondition.addPressureBoundary(sGeometry, 4, omega);
- sBoundaryCondition.addVelocityBoundary(sGeometry, 5, omega);
AnalyticalConst2D<T,T> rho0(1.0);
AnalyticalConst2D<T,T> u0(0.0, 0.0);
- auto materials = sGeometry.getMaterialIndicator({1, 3, 4, 5});
+ auto materials = sGeometry.getMaterialIndicator({1, 2, 3, 4});
sLattice.defineRhoU(materials, rho0, u0);
sLattice.iniEquilibrium(materials, rho0, u0);
@@ -238,11 +238,8 @@ void takeMeasurements(Grid2D<T,DESCRIPTOR>& grid)
intpolatePressure(&pressureInFrontOfCylinder, point1);
intpolatePressure(&pressureBehindCylinder, point2);
- clout << "pressure1=" << pressureInFrontOfCylinder;
- clout << "; pressure2=" << pressureBehindCylinder;
-
T pressureDrop = pressureInFrontOfCylinder - pressureBehindCylinder;
- clout << "; pressureDrop=" << pressureDrop;
+ clout << "pressureDrop=" << pressureDrop;
const int input[3] {};
T drag[dragF.getTargetDim()] {};
@@ -275,22 +272,22 @@ int main(int argc, char* argv[])
const auto coarseDeltaX = coarseGrid.getConverter().getPhysDeltaX();
- const Vector<T,2> fineExtend {10*cylinderD, ly-2*coarseDeltaX};
- const Vector<T,2> fineOrigin {1*coarseDeltaX, coarseDeltaX};
+ const Vector<T,2> fineExtend {10*cylinderD, domainExtend[1]-4*coarseDeltaX};
+ const Vector<T,2> fineOrigin {0.5*cylinderD, (domainExtend[1]-fineExtend[1])/2};
auto& fineGrid = coarseGrid.refine(fineOrigin, fineExtend);
prepareGeometry(fineGrid, domainOrigin, domainExtend);
disableRefinedArea(coarseGrid, fineGrid);
- const Vector<T,2> fineExtend2 {6*cylinderD, fineGrid.getExtend()[1]-2*coarseDeltaX};
- const Vector<T,2> fineOrigin2 {2*coarseDeltaX, (ly-fineExtend2[1])/2};
+ const Vector<T,2> fineExtend2 {6*cylinderD, fineGrid.getExtend()[1]-4*coarseDeltaX};
+ const Vector<T,2> fineOrigin2 {0.75*cylinderD, (domainExtend[1]-fineExtend2[1])/2};
auto& fineGrid2 = fineGrid.refine(fineOrigin2, fineExtend2);
prepareGeometry(fineGrid2, domainOrigin, domainExtend);
disableRefinedArea(fineGrid, fineGrid2);
const Vector<T,2> fineExtend3 {4*cylinderD, 2*cylinderD};
- const Vector<T,2> fineOrigin3 {1.2*cylinderD, (ly-fineExtend3[1])/2};
+ const Vector<T,2> fineOrigin3 {1*cylinderD, (domainExtend[1]-fineExtend3[1])/2};
auto& fineGrid3 = fineGrid2.refine(fineOrigin3, fineExtend3);
prepareGeometry(fineGrid3, domainOrigin, domainExtend);
@@ -312,7 +309,7 @@ int main(int argc, char* argv[])
clout << "Total number of active cells: " << coarseGrid.getActiveVoxelN() << endl;
clout << "Starting simulation..." << endl;
- const int statIter = coarseGrid.getConverter().getLatticeTime(0.1);
+ const int statIter = coarseGrid.getConverter().getLatticeTime(0.05);
Timer<T> timer(
coarseGrid.getConverter().getLatticeTime(maxPhysT),
coarseGrid.getSuperGeometry().getStatistics().getNvoxel());