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BUG: cellLimited<cubic>: ensure the limiter is differentiable (fixes #2113)

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Shannon Leakey
2021-06-07 17:26:09 +01:00
committed by Andrew Heather
parent b4724c37ad
commit ab49eaf983
2 changed files with 12 additions and 10 deletions
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1
CONTRIBUTORS.md
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@ -24,6 +24,7 @@ It is likely incomplete...
- Hrvoje Jasak - Hrvoje Jasak
- Alexander Kabat vel Job - Alexander Kabat vel Job
- Thilo Knacke - Thilo Knacke
- Shannon Leakey
- Tommaso Lucchini - Tommaso Lucchini
- Graham Macpherson - Graham Macpherson
- Alexey Matveichev - Alexey Matveichev

19
src/finiteVolume/finiteVolume/gradSchemes/limitedGradSchemes/cellLimitedGrad/gradientLimiters/cubicGradientLimiter.H
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@ -6,6 +6,7 @@
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
Copyright (C) 2018 OpenFOAM Foundation Copyright (C) 2018 OpenFOAM Foundation
Copyright (C) 2021 OpenCFD Ltd.
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
This file is part of OpenFOAM. This file is part of OpenFOAM.
@ -24,7 +25,7 @@ License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class Class
Foam::fv::gradientLimiters::minmod Foam::fv::gradientLimiters::cubic
Description Description
Cubic gradient limiter Cubic gradient limiter
@ -44,9 +45,11 @@ Description
Michalak, K., & Ollivier-Gooch, C. (2008). Michalak, K., & Ollivier-Gooch, C. (2008).
Limiters for unstructured higher-order accurate solutions Limiters for unstructured higher-order accurate solutions
of the Euler equations. of the Euler equations.
In 46th AIAA Aerospace Sciences Meeting and Exhibit (p. 776). In 46th AIAA Aerospace Sciences Meeting and Exhibition.
DOI:10.2514/6.2008-776
\endverbatim \endverbatim
Usage
Example: Example:
\verbatim \verbatim
gradSchemes gradSchemes
@ -57,8 +60,8 @@ Description
\endverbatim \endverbatim
See also See also
Foam::fv::cellLimitedGrad - Foam::fv::cellLimitedGrad
Foam::fv::gradientLimiters::Venkatakrishnan - Foam::fv::gradientLimiters::Venkatakrishnan
\*---------------------------------------------------------------------------*/ \*---------------------------------------------------------------------------*/
@ -102,8 +105,8 @@ public:
cubic(Istream& schemeData) cubic(Istream& schemeData)
: :
rt_(readScalar(schemeData)), rt_(readScalar(schemeData)),
a_(2.0/sqr(rt_) - 2.0/pow3(rt_)), a_((rt_ - 2)/pow3(rt_)),
b_(-(3.0/2.0)*a_*rt_) b_(-(3*a_*sqr(rt_) + 1)/(2*rt_))
{ {
if (rt_ < 1) if (rt_ < 1)
{ {
@ -123,11 +126,9 @@ public:
{ {
return ((a_*r + b_)*r + 1)*r; return ((a_*r + b_)*r + 1)*r;
} }
else
{
return 1; return 1;
} }
}
}; };