dave comments

CHANGELOG.md

@@ -50,6 +50,8 @@ v4.4.0
 - Improvements to mesh linearisation module (!659)
 - Add support for Gmsh high-order output (!679)
 - Move CAD classes to factory format (!676)
+- Add module to check topology of the mesh along with boundary connectivity
+  to detect problems such as hanging nodes (!691)
 - Add option to `linearise` module to linearise only prisms (!688)
 
 **FieldConvert:**

docs/user-guide/utilities/nekmesh.tex

@@ -618,6 +618,19 @@ may issue the command
   module in combination with the splitting module described earlier.
 \end{notebox}
 
+\subsection{Link Checking}
+
+It is quite possible that a mesh contains some sort of hanging entity or
+element connectivity error. The check link module is a fast check that, a)
+elements are correctly connected and b) the boundary entities (composites)
+match the interior domain:
+
+\begin{lstlisting}[style=BashInputStyle]
+  NekMesh -m linkcheck mesh.xml mesh2.xml
+\end{lstlisting}
+
+This module should be added to the module chain for any complex if the user
+suspects there may be a mesh issue. The module will print a warning if there is.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

utilities/NekMesh/ProcessModules/ProcessLinkCheck.cpp

@@ -62,7 +62,7 @@ void ProcessLinkCheck::Process()
 {
     if (m_mesh->m_verbose)
     {
-        cout << "ProcessJac: Checking links... " << endl;
+        cout << "ProcessLinkCheck: Checking links... " << endl;
     }
 
     //need to reset all links first to make sure there are no bugs!