boundary values for pressure

openfoam/run/flowAroundCylinder/0/p

@@ -20,12 +20,20 @@ internalField   uniform 0;
 
 boundaryField
 {
-    movingWall
+    // inlet as in channelInlet, outlet the same because "fixedFlux" sound fitting for a pipe where the same amount goes in as out
+    inlet
     {
-        type            zeroGradient;
+        type            fixedFluxPressure;
+    }
+
+    outlet
+    {
+        type            fixedFluxPressure;
+        /* type            fixedValue;  */
+        /* value           uniform 0;  */
     }
 
-    fixedWalls
+    wall  // both walls (outer walls) and cylinder
     {
         type            zeroGradient;
     }

openfoam/run/flowAroundCylinder/system/blockMeshDict

@@ -77,20 +77,13 @@ edges
 
 boundary
 (
-    bottomwall
+    walls
     {
         type wall;
         faces
         (
             (Fbl Fbs Bbl Bbs)
             (Fbs Bbs Bbr Fbr)
-        );
-    }
-    topwall
-    {
-        type wall;
-        faces
-        (
             (Fts Bts Btl Ftl)
             (Ftr Btr Bts Fts)
         );