From 434c888eef53c4152cd99922a4a65df79ac0b2aa Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Thu, 21 Mar 2019 15:37:28 +0100
Subject: Use Bouzidi boundary condition for refined cylinder2d

---
 apps/adrian/cylinder2d/common/model.h | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/apps/adrian/cylinder2d/common/model.h b/apps/adrian/cylinder2d/common/model.h
index d70208a..124a1df 100644
--- a/apps/adrian/cylinder2d/common/model.h
+++ b/apps/adrian/cylinder2d/common/model.h
@@ -115,7 +115,19 @@ void prepareLattice(Grid2D<T,DESCRIPTOR>& grid)
   sLattice.defineDynamics(sGeometry, 2, &bulkDynamics); // walls
   sLattice.defineDynamics(sGeometry, 3, &bulkDynamics); // inflow
   sLattice.defineDynamics(sGeometry, 4, &bulkDynamics); // outflow
-  sLattice.defineDynamics(sGeometry, 5, &instances::getBounceBack<T,DESCRIPTOR>()); // cylinder
+
+  // only set zero velocity boundary if cylinder covered by the grid
+  if (sGeometry.getStatistics().getNvoxel(5) > 0) {
+    sLattice.defineDynamics(sGeometry, 5, &instances::getNoDynamics<T,DESCRIPTOR>());
+
+    sOffLatticeBoundaryCondition2D<T,DESCRIPTOR> sOffBoundaryCondition = grid.getOffLatticeBoundaryCondition();
+    createBouzidiBoundaryCondition2D<T,DESCRIPTOR>(sOffBoundaryCondition);
+
+    const Vector<T,2> cylinderOrigin {cylinderCenter[0], cylinderCenter[1]};
+    IndicatorCircle2D<T> obstacle(cylinderOrigin, cylinderD/2);
+
+    sOffBoundaryCondition.addZeroVelocityBoundary(sGeometry, 5, obstacle);
+  }
 
   sBoundaryCondition.addVelocityBoundary(sGeometry, 2, omega);
   sBoundaryCondition.addVelocityBoundary(sGeometry, 3, omega);
@@ -131,7 +143,6 @@ void prepareLattice(Grid2D<T,DESCRIPTOR>& grid)
   sLattice.initialize();
 
   clout << "Prepare lattice ... OK" << std::endl;
-  sGeometry.print();
 }
 
 void setBoundaryValues(Grid2D<T,DESCRIPTOR>& grid, int iT)
-- 
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