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Commit 33221dc8 authored by laurence's avatar laurence
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STYLE: Update default cvMeshDict

parent db648a75
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applications/utilities/mesh/generation/cvMesh/cvMeshDict
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......@@ -70,10 +70,9 @@ geometry
type triSurfaceMesh;
}
// Surface used for cell size control
tunnel_APPROACH_INLET.obj
refinementBox
{
type triSurfaceMesh;
type searchableBox;
}
}
......@@ -101,16 +100,16 @@ surfaceConformation
// Distance to a feature point within which surface and edge
// conformation points are excluded - fraction of the local target
// cell size
featurePointExclusionDistanceCoeff 0.4;
featurePointExclusionDistanceCoeff 0.65;
// Distance to an existing feature edge conformation location
// within which other edge conformation location are excluded -
// fraction of the local target cell size
featureEdgeExclusionDistanceCoeff 0.2;
featureEdgeExclusionDistanceCoeff 0.65;
// Optimisation: do not check for surface intersection (of dual edges)
// for points near to surface.
surfaceSearchDistanceCoeff 2.5;
surfaceSearchDistanceCoeff 5;
// Maximum allowable protrusion through the surface before
// conformation points are added - fraction of the local target
......@@ -126,31 +125,22 @@ surfaceConformation
surfaceConformationRebuildFrequency 10;
// Initial and intermediate controls
coarseConformationControls
conformationControls
{
// Initial conformation
initial
{
// We've got a point poking through the surface. Don't do any
// surface conformation if near feature edge (since feature edge
// conformation should have priority)
// distance to search for near feature edges
edgeSearchDistCoeff 1.1;
// Proximity to a feature edge where a surface hit is
// not created, only the edge conformation is created
// - fraction of the local target cell size. Coarse
// conformation, initial protrusion tests.
surfacePtReplaceDistCoeff 0.5;
}
// We've got a point poking through the surface. Don't do any
// surface conformation if near feature edge (since feature edge
// conformation should have priority)
// Same for iterations
iteration
{
edgeSearchDistCoeff 1.25;
surfacePtReplaceDistCoeff 0.7;
}
// distance to search for near feature edges
edgeSearchDistCoeff 1.1;
// Proximity to a feature edge where a surface hit is
// not created, only the edge conformation is created
// - fraction of the local target cell size. Coarse
// conformation, initial protrusion tests.
surfacePtReplaceDistCoeff 0.5;
surfacePtExclusionDistanceCoeff 0.5;
// Stop either at maxIterations or if the number of surface pokes
// is very small (iterationToInitialHitRatioLimit * initial number)
......@@ -161,26 +151,6 @@ surfaceConformation
iterationToInitialHitRatioLimit 0.001;
}
// Final (at endTime) controls
fineConformationControls
{
initial
{
edgeSearchDistCoeff 1.1;
surfacePtReplaceDistCoeff 0.5;
}
iteration
{
edgeSearchDistCoeff 1.25;
surfacePtReplaceDistCoeff 0.7;
}
maxIterations 15;
iterationToInitialHitRatioLimit 0.001;
}
// Geometry to mesh to
geometryToConformTo
{
......@@ -219,7 +189,7 @@ initialPoints
// Take boundbox of all geometry. Sample with this box. If too much
// samples in box (due to target cell size) split box.
autoDensityDetails
autoDensityCoeffs
{
// Initial number of refinement levels. Needs to be enough to pick
// up features due to size ratio. If not enough it will take longer
......@@ -233,7 +203,7 @@ initialPoints
surfaceSampleResolution 5;
}
uniformGridDetails
uniformGridCoeffs
{
// Absolute cell size.
initialCellSize 0.0015;
......@@ -241,14 +211,14 @@ initialPoints
randomPerturbationCoeff 0.02;
}
bodyCentredCubicDetails
bodyCentredCubicCoeffs
{
initialCellSize 0.0015;
randomiseInitialGrid no;
randomPerturbationCoeff 0.1;
}
pointFileDetails
pointFileCoeffs
{
// Reads points from file. Still rejects points that are too
// close to the surface (minimumSurfaceDistanceCoeff) or on the
......@@ -269,75 +239,45 @@ initialPoints
motionControl
{
// Absolute cell size of back ground mesh. This is the maximum cell size.
defaultCellSize 0.00075;
defaultCellSize 0.25;
// Absolute cell size of back ground mesh. This is the minimum cell size.
minimumCellSize 0;
minimumCellSizeCoeff 0;
//cellShapeControl constantControl;
//cellShapeControl fileControl;
cellShapeControl surfaceControl;
maxSmoothingIterations 200;
// Provide constant values for cell size and alignment
constantControlCoeffs
{
cellSize 0.00075;
cellAlignment (1 0 0 0 1 0 0 0 1);
}
// Read in the points of the background grid used for cell shape control
// from a file, with corresponding files for alignment and size
fileControlCoeffs
{
pointFile "";
sizesFile "";
alignmentsFile "";
}
maxRefinementIterations 2;
// Calculate the sizes and alignments from surfaces
surfaceControlCoeffs
shapeControlFunctions
{
ref7_outside
flange
{
// optional name of geometry
surface ref7;
priority 1;
mode outside;//inside/bothSides
cellSizeFunction linearDistance;
// cellSizeFunctions:
// uniform : uniform size
// uniformDistance : fixed size for all within distance
// linearSpatial : grading in specified direction only
// linearDistance : vary linearly as distance to surface
// surfaceOffsetLinearDistance : constant close to surface then
// fade like linearDistance
// Vary from surfaceCellSize (close to the surface) to
// distanceCellSize (further than 'distance')
linearDistanceCoeffs
type searchableSurfaceControl;
forceInitialPointInsertion on;
priority 1;
mode inside;
surfaceCellSizeFunction uniformValue;
uniformValueCoeffs
{
surfaceCellSize 1e-5; // absolute size
distanceCellSize $defaultCellSize;
distance 1.0;
surfaceCellSizeCoeff 0.5;
}
}
tunnel_APPROACH_INLET.obj
{
priority 1;
mode bothSides;
cellSizeFunction surfaceOffsetLinearDistance;
// Constant within a certain distance then linear fade away.
// Good for layers.
cellSizeFunction surfaceOffsetLinearDistance;
surfaceOffsetLinearDistanceCoeffs
{
surfaceCellSize 1e-5;
distanceCellSize $defaultCellSize;
surfaceOffset 0.1;
totalDistance 1.0;
distanceCellSizeCoeff 1;
surfaceOffsetCoeff 1;
linearDistanceCoeff 1;
}
}
fileControl
{
type fileControl;
priority 1;
pointsFile "points";
sizesFile "sizes";
alignmentsFile "alignments";
}
}
// Provide an aspect ratio and the direction in which it acts on the mesh.
......@@ -345,7 +285,7 @@ motionControl
cellAspectRatioControl
{
// Aspect ratio.
aspectRatio 2.0;
aspectRatio 1.0;
// Direction of action of the aspect ratio
aspectRatioDirection (1 0 0);
}
......@@ -366,26 +306,7 @@ motionControl
objOutput no;
// Timing and memory usage.
timeChecks yes;
// Number of rays in plane parallel to nearest surface. Used to detect
// next closest surfaces. Used to work out alignment (three vectors)
// to surface.
// Note that only the initial points (from the seeding) calculate this
// information so if these are not fine enough the alignment will
// not be correct. (any points added during the running will lookup
// this information from the nearest initial point since it is
// expensive)
alignmentSearchSpokes 36;
// For each delaunay edge (between two vertices, becomes
// the Voronoi face normal) snap to the alignment direction if within
// alignmentAcceptanceAngle. Slightly > 45 is a good choice - prevents
// flipping.
alignmentAcceptanceAngle 48;
// How often to rebuild the alignment info (expensive)
sizeAndAlignmentRebuildFrequency 20;
timeChecks no;
// When to insert points. Not advisable change to
// these settings.
......@@ -434,7 +355,7 @@ polyMeshFiltering
filterFaces off;
// Write the underlying Delaunay tet mesh at output time
writeTetDualMesh false; //true;
writeTetDualMesh false;
// Upper limit on the size of faces to be filtered.
// fraction of the local target cell size
......
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