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ENH: support relative expansion for PDRblockMesh (#1655)

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This commit is contained in:
Mark Olesen
2020-03-31 16:59:53 +02:00
parent 9b1c0786ce
commit 95f14621de
2 changed files with 118 additions and 41 deletions
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125
src/mesh/blockMesh/PDRblockMesh/PDRblock.C
View File

@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2019 OpenCFD Ltd.
Copyright (C) 2019-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -29,6 +29,25 @@ License
#include "ListOps.H"
#include "emptyPolyPatch.H"
// Output when verbosity is enabled
#undef Log
#define Log if (verbose_) Info
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
const Foam::Enum
<
Foam::PDRblock::expansionType
>
Foam::PDRblock::expansionNames_
({
{ expansionType::EXPAND_UNIFORM, "uniform" },
{ expansionType::EXPAND_RATIO, "ratio" },
{ expansionType::EXPAND_RELATIVE, "relative"}
});
// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
namespace Foam
@ -38,7 +57,18 @@ namespace Foam
{
return nDiv > 1 ? pow(expRatio, 1.0/(nDiv - 1)) : 0.0;
}
}
//- Calculate geometric ratio from relative ratio
inline scalar relativeToGeometricRatio
(
const scalar expRatio,
const label nDiv
)
{
return nDiv > 1 ? pow(expRatio, (nDiv - 1)) : 1.0;
}
} // End namespace Foam
// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
@ -132,7 +162,8 @@ void Foam::PDRblock::readGridControl
(
const direction cmpt,
const dictionary& dict,
const scalar scaleFactor
const scalar scaleFactor,
expansionType expandType
)
{
//- The begin/end nodes for each segment
@ -144,11 +175,8 @@ void Foam::PDRblock::readGridControl
// The expansion ratio per segment
scalarList expansion;
if (verbose_)
{
Info<< "Reading grid control for "
<< vector::componentNames[cmpt] << " direction" << nl;
}
Log << "Reading grid control for "
<< vector::componentNames[cmpt] << " direction" << nl;
// Points
// ~~~~~~
@ -178,10 +206,7 @@ void Foam::PDRblock::readGridControl
// Do points increase monotonically?
checkMonotonic(cmpt, knots);
if (verbose_)
{
Info<< " points : " << flatOutput(knots) << nl;
}
Log << " points : " << flatOutput(knots) << nl;
// Divisions
@ -221,11 +246,7 @@ void Foam::PDRblock::readGridControl
<< exit(FatalIOError);
}
if (verbose_)
{
Info<< " nCells : " << flatOutput(divisions) << nl;
}
Log << " nCells : " << flatOutput(divisions) << nl;
// Expansion ratios
@ -242,7 +263,7 @@ void Foam::PDRblock::readGridControl
}
}
if (expansion.size() && expansion.size() != nSegments)
if (expansion.size() && divisions.size() != expansion.size())
{
FatalIOErrorInFunction(dict)
<< "Mismatch in number of expansion ratios and divisions:"
@ -255,22 +276,48 @@ void Foam::PDRblock::readGridControl
{
expansion.resize(nSegments, scalar(1));
if (verbose_)
if (expandType != expansionType::EXPAND_UNIFORM)
{
Info<< "Warning: 'ratios' not specified, using constant spacing"
<< nl;
expandType = expansionType::EXPAND_UNIFORM;
Log << "Warning: no 'ratios', use uniform spacing" << nl;
}
}
else
{
if (verbose_)
switch (expandType)
{
Info<< " ratios : " << flatOutput(expansion) << nl;
case expansionType::EXPAND_UNIFORM:
{
expansion = scalar(1);
break;
}
case expansionType::EXPAND_RATIO:
{
Log << " ratios : " << flatOutput(expansion) << nl;
break;
}
case expansionType::EXPAND_RELATIVE:
{
Log << " relative : " << flatOutput(expansion) << nl;
auto divIter = divisions.cbegin();
for (scalar& expRatio : expansion)
{
expRatio = relativeToGeometricRatio(expRatio, *divIter);
++divIter;
}
Log << " ratios : " << flatOutput(expansion) << nl;
break;
}
}
}
// Define the grid points
scalarList& gridPoint = grid_[cmpt];
@ -291,7 +338,11 @@ void Foam::PDRblock::readGridControl
const scalar dist = (subPoint.last() - subPoint.first());
if (equal(expRatio, 1))
if
(
expandType == expansionType::EXPAND_UNIFORM
|| equal(expRatio, 1)
)
{
for (label i=1; i < nDiv; ++i)
{
@ -318,10 +369,7 @@ void Foam::PDRblock::readGridControl
void Foam::PDRblock::readBoundary(const dictionary& dict)
{
if (verbose_)
{
Info<< "Reading boundary entries" << nl;
}
Log << "Reading boundary entries" << nl;
PtrList<entry> patchEntries;
@ -507,12 +555,21 @@ Foam::PDRblock::PDRblock(const dictionary& dict, bool verbose)
bool Foam::PDRblock::read(const dictionary& dict)
{
// Mark no scaling with invalid value
const scalar scaleFactor = dict.lookupOrDefault<scalar>("scale", -1);
const scalar scaleFactor(dict.getOrDefault<scalar>("scale", -1));
readGridControl(0, dict.subDict("x"), scaleFactor);
readGridControl(1, dict.subDict("y"), scaleFactor);
readGridControl(2, dict.subDict("z"), scaleFactor);
expansionType expandType
(
expansionNames_.getOrDefault
(
"expansion",
dict,
expansionType::EXPAND_RATIO
)
);
readGridControl(0, dict.subDict("x"), scaleFactor, expandType);
readGridControl(1, dict.subDict("y"), scaleFactor, expandType);
readGridControl(2, dict.subDict("z"), scaleFactor, expandType);
adjustSizes();

34
src/mesh/blockMesh/PDRblockMesh/PDRblock.H
View File

@ -5,7 +5,7 @@
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2019 OpenCFD Ltd.
Copyright (C) 2019-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -40,6 +40,7 @@ Description
y | Y-direction grid specification | yes |
z | Z-direction grid specification | yes |
scale | Point scaling | no | 1.0
expansion | Type of expansion (ratio/relative) | no | ratio
boundary | Boundary patches | yes |
defaultPatch | Default patch specification | no |
\endtable
@ -49,12 +50,13 @@ Description
Property| Description | Required | Default
points | Locations defining the mesh segment | yes |
nCells | Divisions per mesh segment | yes |
ratios | Expansion ratio (end/start) per segment | no | uniform
ratios | Expansion values per segment | no |
\endtable
The expansion ratios are defined as per blockMesh and represent the ratio
of end-size / start-size for the section. A negative value is trapped
and treated as its reciprocal.
A negative expansion value is trapped and treated as its reciprocal.
by default, the expansion is as per blockMesh and represents the ratio
of end-size / start-size for the section.
Alternatively, the relative size can be given.
SourceFiles
PDRblockI.H
@ -70,6 +72,7 @@ SourceFiles
#include "boundBox.H"
#include "pointField.H"
#include "faceList.H"
#include "Enum.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
@ -88,9 +91,19 @@ class PDRblock
:
public ijkMesh
{
public:
// Data Types
//- The expansion type
enum expansionType
{
EXPAND_UNIFORM, //!< Uniform expansion (ie, no expansion)
EXPAND_RATIO, //!< End/start ratio
EXPAND_RELATIVE //!< Relative expansion ratio
};
// Public Classes
//- Grid locations in an axis direction.
@ -151,6 +164,12 @@ public:
private:
// Data Types
//- Named enumerations for the expansion type
const static Enum<expansionType> expansionNames_;
// Private Classes
//- Extracted patch settings
@ -205,7 +224,8 @@ private:
(
const direction cmpt,
const dictionary& dict,
const scalar scaleFactor = -1
const scalar scaleFactor = -1,
expansionType expandType = expansionType::EXPAND_RATIO
);
//- Read "boundary" information