From f1e950ce83b1a5a185d4661dbbb06286f0b50853 Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Thu, 16 Jul 2020 17:16:44 +0100
Subject: [PATCH] ENH: snappyHexMeshDict: document small region removal. See
 #1772

---
 etc/caseDicts/annotated/snappyHexMeshDict | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/etc/caseDicts/annotated/snappyHexMeshDict b/etc/caseDicts/annotated/snappyHexMeshDict
index 21782f4022..c1f6366c65 100644
--- a/etc/caseDicts/annotated/snappyHexMeshDict
+++ b/etc/caseDicts/annotated/snappyHexMeshDict
@@ -462,6 +462,12 @@ castellatedMeshControls
     //           (currently only a single layer growth i.e. -1 is supported)
     //           Default value is 0.
     //nCellZoneErodeIter 2;
+
+    // Optional: delete any region smaller than below fraction of the overall
+    //           size (on a per-zone basis). This is occasionally useful
+    //           when generating meshes with faceZones as baffles or boundary
+    //           faces.
+    //minCellFraction 0.001;
 }
 
 // Settings for the snapping.