From 346b31d9e921eb091a4e8e8f32866a9ad4b68314 Mon Sep 17 00:00:00 2001
From: Henry Weller <http://cfd.direct>
Date: Mon, 23 Nov 2015 16:48:05 +0000
Subject: [PATCH] snappyHexMesh layerParameters: Increased maxIters to 20
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1918 Patch
provided by Richard Jones
maxIters could be made an option input if 20 is not sufficient for
difficult cases.
---
.../layerParameters/layerParameters.C | 33 +++++++------------
.../layerParameters/layerParameters.H | 3 +-
2 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.C b/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.C
index ed9dde3a813..49125589a3e 100644
--- a/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.C
+++ b/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.C
@@ -48,12 +48,9 @@ Foam::scalar Foam::layerParameters::layerExpansionRatio
return 1.0;
}
- //scalar totalOverFirst = totalThickness/firstLayerThickess;
-
- const label maxIters = 10;
+ const label maxIters = 20;
const scalar tol = 1e-8;
-
if (mag(n-totalOverFirst) < tol)
{
return 1.0;
@@ -74,8 +71,6 @@ Foam::scalar Foam::layerParameters::layerExpansionRatio
maxR = totalOverFirst/(n - 1);
}
- //Info<< "Solution bounds = (" << minR << ", " << maxR << ")" << nl << endl;
-
// Starting guess
scalar r = 0.5*(minR + maxR);
@@ -85,14 +80,9 @@ Foam::scalar Foam::layerParameters::layerExpansionRatio
const scalar fx = pow(r, n) - totalOverFirst*r - (1 - totalOverFirst);
const scalar dfx = n*pow(r, n - 1) - totalOverFirst;
-
r -= fx/dfx;
- const scalar error = mag(r - prevr);
-
- //Info<< i << " " << r << " Error = " << error << endl;
-
- if (error < tol)
+ if (mag(r - prevr) < tol)
{
break;
}
@@ -103,7 +93,6 @@ Foam::scalar Foam::layerParameters::layerExpansionRatio
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
-// Construct from dictionary
Foam::layerParameters::layerParameters
(
const dictionary& dict,
@@ -406,9 +395,9 @@ Foam::scalar Foam::layerParameters::layerThickness
}
else
{
- return firstLayerThickess *
- (1.0 - pow(expansionRatio, nLayers))
- / (1.0 - expansionRatio);
+ return firstLayerThickess
+ *(1.0 - pow(expansionRatio, nLayers))
+ /(1.0 - expansionRatio);
}
}
break;
@@ -422,9 +411,9 @@ Foam::scalar Foam::layerParameters::layerThickness
else
{
scalar invExpansion = 1.0 / expansionRatio;
- return finalLayerThickess *
- (1.0 - pow(invExpansion, nLayers))
- / (1.0 - invExpansion);
+ return finalLayerThickess
+ *(1.0 - pow(invExpansion, nLayers))
+ /(1.0 - invExpansion);
}
}
break;
@@ -472,7 +461,7 @@ Foam::scalar Foam::layerParameters::layerExpansionRatio
{
return
1.0
- / layerExpansionRatio
+ /layerExpansionRatio
(
nLayers,
totalThickness/finalLayerThickess
@@ -565,8 +554,8 @@ Foam::scalar Foam::layerParameters::finalLayerThicknessRatio
{
return
pow(expansionRatio, nLayers - 1)
- * (1.0 - expansionRatio)
- / (1.0 - pow(expansionRatio, nLayers));
+ *(1.0 - expansionRatio)
+ /(1.0 - pow(expansionRatio, nLayers));
}
}
else
diff --git a/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.H b/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.H
index 21d52fdd692..52b4855ae26 100644
--- a/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.H
+++ b/src/mesh/autoMesh/autoHexMesh/autoHexMeshDriver/layerParameters/layerParameters.H
@@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
- \\ / A nd | Copyright (C) 2011-2014 OpenFOAM Foundation
+ \\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@@ -326,7 +326,6 @@ public:
const label nLayers,
const scalar expansionRatio
) const;
-
};
--
GitLab