zhyang-dev/openfoam
1
0
Fork 0
mirror of https://develop.openfoam.com/Development/openfoam.git synced 2025-11-28 03:28:01 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Added support for variable density incompressible solvers.

Browse Source
This commit is contained in:
henry
2009-08-18 17:13:22 +01:00
parent c9be8d63de
commit 0c8ca47199
2 changed files with 71 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
src/postProcessing/functionObjects/forces/forces/forces.C
View File

@ -61,7 +61,7 @@ Foam::tmp<Foam::volSymmTensorField> Foam::forces::devRhoReff() const
const incompressible::RASModel& ras
= obr_.lookupObject<incompressible::RASModel>("RASProperties");
return rhoRef_*ras.devReff();
return rho()*ras.devReff();
}
else if (obr_.foundObject<compressible::LESModel>("LESProperties"))
{
@ -75,7 +75,7 @@ Foam::tmp<Foam::volSymmTensorField> Foam::forces::devRhoReff() const
const incompressible::LESModel& les
= obr_.lookupObject<incompressible::LESModel>("LESProperties");
return rhoRef_*les.devBeff();
return rho()*les.devBeff();
}
else if (obr_.foundObject<basicThermo>("thermophysicalProperties"))
{
@ -97,7 +97,7 @@ Foam::tmp<Foam::volSymmTensorField> Foam::forces::devRhoReff() const
const volVectorField& U = obr_.lookupObject<volVectorField>(UName_);
return -rhoRef_*laminarT.nu()*dev(twoSymm(fvc::grad(U)));
return -rho()*laminarT.nu()*dev(twoSymm(fvc::grad(U)));
}
else if (obr_.foundObject<dictionary>("transportProperties"))
{
@ -108,7 +108,7 @@ Foam::tmp<Foam::volSymmTensorField> Foam::forces::devRhoReff() const
const volVectorField& U = obr_.lookupObject<volVectorField>(UName_);
return -rhoRef_*nu*dev(twoSymm(fvc::grad(U)));
return -rho()*nu*dev(twoSymm(fvc::grad(U)));
}
else
{
@ -121,6 +121,34 @@ Foam::tmp<Foam::volSymmTensorField> Foam::forces::devRhoReff() const
}
Foam::tmp<Foam::volScalarField> Foam::forces::rho() const
{
if (rhoName_ == "rhoInf")
{
const fvMesh& mesh = refCast<const fvMesh>(obr_);
return tmp<volScalarField>
(
new volScalarField
(
IOobject
(
"rho",
mesh.time().timeName(),
mesh
),
mesh,
dimensionedScalar("rho", dimDensity, rhoRef_)
)
);
}
else
{
return(obr_.lookupObject<volScalarField>(rhoName_));
}
}
Foam::scalar Foam::forces::rho(const volScalarField& p) const
{
if (p.dimensions() == dimPressure)
@ -129,6 +157,13 @@ Foam::scalar Foam::forces::rho(const volScalarField& p) const
}
else
{
if (rhoName_ != "rhoInf")
{
FatalErrorIn("forces::rho(const volScalarField& p)")
<< "Dynamic pressure is expected but kinematic is provided."
<< exit(FatalError);
}
return rhoRef_;
}
}
@ -149,11 +184,12 @@ Foam::forces::forces
active_(true),
log_(false),
patchSet_(),
pName_(""),
UName_(""),
pName_(word::null),
UName_(word::null),
rhoName_(word::null),
directForceDensity_(false),
fDName_(""),
rhoRef_(0),
rhoRef_(VGREAT),
CofR_(vector::zero),
forcesFilePtr_(NULL)
{
@ -175,6 +211,12 @@ Foam::forces::forces
}
read(dict);
if (active_)
{
// Create the forces file if not already created
makeFile();
}
}
@ -222,18 +264,31 @@ void Foam::forces::read(const dictionary& dict)
// Optional entries U and p
pName_ = dict.lookupOrDefault<word>("pName", "p");
UName_ = dict.lookupOrDefault<word>("UName", "U");
rhoName_ = dict.lookupOrDefault<word>("rhoName", "rho");
// Check whether UName and pName exists, if not deactivate forces
// Check whether UName, pName and rhoName exists,
// if not deactivate forces
if
(
!obr_.foundObject<volVectorField>(UName_)
|| !obr_.foundObject<volScalarField>(pName_)
|| (
rhoName_ != "rhoInf"
&& !obr_.foundObject<volScalarField>(rhoName_)
)
)
{
active_ = false;
WarningIn("void forces::read(const dictionary& dict)")
<< "Could not find " << UName_ << " or "
<< pName_ << " in database." << nl
<< "Could not find " << UName_ << ", " << pName_;
if (rhoName_ != "rhoInf")
{
Info<< " or " << rhoName_;
}
Info<< " in database." << nl
<< " De-activating forces."
<< endl;
}

6
src/postProcessing/functionObjects/forces/forces/forces.H
View File

@ -132,6 +132,9 @@ protected:
//- Name of velocity field
word UName_;
//- Name of density field (optional)
word rhoName_;
//- Is the force density being supplied directly?
Switch directForceDensity_;
@ -157,6 +160,9 @@ protected:
//- Return the effective viscous stress (laminar + turbulent).
tmp<volSymmTensorField> devRhoReff() const;
//- Return rho if rhoName is specified otherwise rhoRef
tmp<volScalarField> rho() const;
//- Return rhoRef if the pressure field is dynamic, i.e. p/rho
// otherwise return 1
scalar rho(const volScalarField& p) const;