Commit 8e78a278 authored by Andrew Heather's avatar Andrew Heather
Browse files

BUG: pressure FO - resolved hydrostatic contribution for incompressible cases. See #1544

parent 0bbf94fb
......@@ -6,7 +6,7 @@
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2012-2016 OpenFOAM Foundation
Copyright (C) 2016-2019 OpenCFD Ltd.
Copyright (C) 2016-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
......@@ -175,7 +175,8 @@ Foam::tmp<Foam::volScalarField> Foam::functionObjects::pressure::rhoScale
void Foam::functionObjects::pressure::addHydrostaticContribution
(
volScalarField& p
const volScalarField& p,
volScalarField& prgh
) const
{
// Add/subtract hydrostatic contribution
......@@ -206,12 +207,12 @@ void Foam::functionObjects::pressure::addHydrostaticContribution
{
case ADD:
{
p += rgh;
prgh += rgh;
break;
}
case SUBTRACT:
{
p -= rgh;
prgh -= rgh;
break;
}
default:
......@@ -243,7 +244,7 @@ Foam::tmp<Foam::volScalarField> Foam::functionObjects::pressure::calcPressure
volScalarField& result = tresult.ref();
addHydrostaticContribution(result);
addHydrostaticContribution(p, result);
if (mode_ & STATIC)
{
......
......@@ -6,7 +6,7 @@
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2012-2016 OpenFOAM Foundation
Copyright (C) 2016-2019 OpenCFD Ltd.
Copyright (C) 2016-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
......@@ -101,6 +101,8 @@ Usage
UInf | Freestream velocity for coefficient calculation | no |
rhoInf | Freestream density for coefficient calculation | no |
hydrostaticMode | Hydrostatic contributions (see below) | no | none
g | Gravity vector (see below) | no |
hRef | Reference height (see below) | no |
\endtable
The \c mode entry is used to select the type of pressure that is calculated.
......@@ -117,6 +119,15 @@ Usage
- \c add : add the term, e.g. to convert from p_rgh to p
- \c subtract : subtract the term, e.g. to convert from p to p_rgh
If the \c hydrostaticMode is active, values are also required for
gravity, \c g, and reference height, \c hRef. By default these will be
retrieved from the database. When these values are not available
the user must provide them, e.g.
\verbatim
g (0 -9.81 0);
hRef 0;
\endverbatim
See also
Foam::functionObjects::fieldExpression
......@@ -247,7 +258,11 @@ private:
) const;
//- Add the hydrostatic contribution
void addHydrostaticContribution(volScalarField& p) const;
void addHydrostaticContribution
(
const volScalarField& p,
volScalarField& prgh
) const;
//- Calculate and return the pressure
tmp<volScalarField> calcPressure
......
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