improving the documentation related to removing cell types and surplus elements in the mesh

NumLib/Fem/CoordinatesMapping/NaturalCoordinatesMapping.cpp

@@ -112,7 +112,9 @@ static void checkJacobianDeterminant(const double detJ,
 #ifndef NDEBUG
         std::cerr << element << "\n";
 #endif  // NDEBUG
-        OGS_FATAL("Please check the node numbering of the element.");
+        OGS_FATAL(
+                "Please check whether the node numbering of the element is correct,"
+                "or additional elements (like boundary elements) are still present in the mesh.");
     }
 
     if (detJ == 0)
@@ -125,7 +127,9 @@ static void checkJacobianDeterminant(const double detJ,
             "Please check whether:\n"
             "\t the element nodes may have the same coordinates,\n"
             "\t or the coordinates of all nodes are not given on the x-axis "
-            "for a 1D problem or in the xy-plane in the 2D case.");
+            "for a 1D problem or in the xy-plane in the 2D case.\n"
+            "The first case can occurr, if not all boundary elements"
+            "were removed from the bulk mesh.");
     }
 }
 

web/content/docs/tools/meshing/remove-mesh-elements/index.pandoc

@@ -29,7 +29,8 @@ removeMeshElements -i <input-mesh> -o <output-mesh>
 	[--zero-volume]
     [--x-min <value>] [--x-max <value>] [--y-min <value>] [--y-max <value>] [--z-min <value>] [--z-max <value>]
 ```
-Each particular line with optional arguments refere to one of the different removal criterions mentioned in the general section.
+Each particular line with optional arguments refers to one of the different removal criteria mentioned in the general section.
+The corresponding element types differ from vtk cell types and can be found in MeshLib/MeshEnums.cpp.
 
 ## Examples