Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Now pimpleDyMFoam is exactly equivalent to pimpleFoam when running on a
staticFvMesh.  Also when the constant/dynamicMeshDict is not present a
staticFvMesh is automatically constructed so that the pimpleDyMFoam solver can
run any pimpleFoam case without change.

pimpleDyMFoam: Store Uf as an autoPtr for better error handling

pimpleFoam: Set initial deltaT from the Courant number

for improved stability on start-up and compatibility with pimpleDyMFoam

ENH: pimpleFoam: Merged dynamic mesh functionality of pimpleDyMFoam into pimpleFoam

and replaced pimpleDyMFoam with a script which reports this change.

The pimpleDyMFoam tutorials have been moved into the pimpleFoam directory.

This change is the first of a set of developments to merge dynamic mesh
functionality into the standard solvers to improve consistency, usability,
flexibility and maintainability of these solvers.

Henry G. Weller
CFD Direct Ltd.

tutorials/incompressible/pimpleFoam: Updated pimpleDyMFoam tutorials to run pimpleFoam

Renamed tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleDyMFoam

-> tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleFoam

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

XiEngineFoam is a premixed/partially-premixed combustion engine solver which
exclusively uses the Xi flamelet combustion model.

engineFoam is a general engine solver for inhomogeneous combustion with or
without spray supporting run-time selection of the chemistry-based combustion
model.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Standard crank-connecting rod and the new free-piston kinematics motion options
are provides, others can easily be added.

Contributed by Francesco Contino and Nicolas Bourgeois, BURN Research Group.

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

The patch magSf calculation has been changed so that it uses the same
triangulation as the overlap algorithm. This improves consistency and
means that for exactly conforming patches (typically before any mesh
motion) the weights do not require normalisation.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Resolves bug-report https://bugs.openfoam.org/view.php?id=2785

ENH: compressibleInterFoam family: merged two-phase momentum stress modelling from compressibleInterPhaseTransportFoam

The new momentum stress model selector class
compressibleInterPhaseTransportModel is now used to select between the options:

Description
    Transport model selection class for the compressibleInterFoam family of
    solvers.

    By default the standard mixture transport modelling approach is used in
    which a single momentum stress model (laminar, non-Newtonian, LES or RAS) is
    constructed for the mixture.  However if the \c simulationType in
    constant/turbulenceProperties is set to \c twoPhaseTransport the alternative
    Euler-Euler two-phase transport modelling approach is used in which separate
    stress models (laminar, non-Newtonian, LES or RAS) are instantiated for each
    of the two phases allowing for different modeling for the phases.

Mixture and two-phase momentum stress modelling is now supported in
compressibleInterFoam, compressibleInterDyMFoam and compressibleInterFilmFoam.
The prototype compressibleInterPhaseTransportFoam solver is no longer needed and
has been removed.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Patch contributed by Mattijs Janssens
Resolves bug-report https://bugs.openfoam.org/view.php?id=2744

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

Another exception has been added to globalIndexAndTransform to prevent
transformations being generated from coupled patch pairs marked with
coincident-full-match transformations. Foamy generates such patches, and
the faces on them at intermediate stages of meshing can be degenerate,
making the calculation of transformations unreliable. This change
enforces the definition that coincident-full-match patch pairs are not
transformed.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Patch contributed by Mattijs Janssens
Resolves bug-report https://bugs.openfoam.org/view.php?id=2712

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

To unsure fvOptions are instantiated for post-processing createFvOptions.H must
be included in createFields.H rather than in the solver directly.

Resolves bug-report https://bugs.openfoam.org/view.php?id=2733

BUG: porousSimpleFoam: moved createFvOptions.H into createFields.H for -postProcess option

Resolves bug-report https://bugs.openfoam.org/view.php?id=2733

BUG: solvers: Moved fvOption construction into createFields.H for post-processing

This ensures that the fvOptions are constructed for the -postProcessing option
so that functionObjects which process fvOption data operate correctly in this
mode.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

by setting the optional switch YInfZero to true.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

in the limit of the phase fraction -> 0

Can be used with the Maxwell non-Newtonian laminar stress model when used in
multiphase solvers.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Patch contributed by Bruno Santos

Resolves patch request https://bugs.openfoam.org/view.php?id=2684

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

for consistency with other rotating BCs.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

e.g.

odeCoeffs
{
    solver          seulex;
    absTol          1e-12;
    relTol          0.0001;
    maxSteps        1e+06;
}

maxSteps defaults to 10000 for backward compatibility.

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

The absolute value of the the time has been added to the rigid body
model state. This value is not directly necessary for calculating the
evolution of the rigid body system, it just facilitates the
implementation of sub-models which are in some way time-dependent.

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

Mixture molecular weight is now evaluated in heThermo like everything
else, relying on the low level specie mixing rules. Units have also been
corrected.

SpecieMixture: Pure virtual definition for W to prevent Clang warning

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

to support the evaporation of the solvent from the wax film and the changes in
viscosity caused by the reduction in solvent content.

BUG: filmViscosityModel::thixotropicViscosity: Corrected sign of impingement rate

to compensate for rhoSp having the wrong sign

BUG: surfaceFilmModels::waxSolventEvaporation: Corrected handling of impingement

ENH: surfaceFilmModels::waxSolventViscosity: Changed mixing to mole-fraction based

ENH: surfaceFilmModels::thermoSingleLayer: Added call to solveContinuity before updateSubmodels

to allow sub-models to solve transport equations for conserved properties

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Resolves bug-report https://bugs.openfoam.org/view.php?id=2758

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Patch contributed by Timo Niemi, VTT.
Resolves patch request https://bugs.openfoam.org/view.php?id=2753

STYLE: TDACChemistryModel: Removed unnecessary warning messages

Patch contributed by Francesco Contino

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

In the event that matching centroids across a coupled patch pair fails,
we fall back to matching the face point average. The latter can be
obtained more reliably on degenerate faces as the calculation does not
involve division by the face area.

This fallback was already implemented as part of processorPolyPatch.
This change also applies it to the faceCoupleInfo class used by
reconstructParMesh.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Patch contributed by Björn Pfeiffelmann
Resolves patch request https://bugs.openfoam.org/view.php?id=2713

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Resolves bug-report https://bugs.openfoam.org/view.php?id=2748

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

ENH: compressibleInterPhaseTransportFoam: New variant of compressibleInterFoam supporting separate phase stress models

In this version of compressibleInterFoam separate stress models (laminar,
non-Newtonian, LES or RAS) are instantiated for each of the two phases allowing
for completely different modeling for the phases.

e.g. in the climbingRod tutorial case provided a Newtonian laminar model is
instantiated for the air and a Maxwell non-Newtonian model is instantiated for
the viscoelastic liquid.  To stabilize the Maxwell model in regions where the
liquid phase-fraction is 0 the new symmTensorPhaseLimitStabilization fvOption is
applied.

Other phase stress modeling combinations are also possible, e.g. the air may be
turbulent but the liquid laminar and an RAS or LES model applied to the air
only.  However, to stabilize this combination a suitable fvOption would need to
be applied to the turbulence properties where the air phase-fraction is 0.

Henry G. Weller, Chris Greenshields
CFD Direct Ltd.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Resolves bug-report https://bugs.openfoam.org/view.php?id=2739

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Resolves bug-report https://bugs.openfoam.org/view.php?id=2740

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

The restraints generate either joint-local (tau) or global (fx) forces.
At the moment they all generate the latter. This change corrects three
of the four restraints so that the forces are in the gobal coordinate
system and not the local coordinate system of the body.

The problem with this is that the forward dynamics code then transforms
most of the forces back to the body local coordinate system. A better
solution would be to associate restraints which are more sensibly
defined in a local frame with the joints instead of the bodies, and
return the forces as part of the tau variable.

Will Bainbridge authored 7 years ago and Andrew Heather committed 7 years ago

Two boundary conditions for the modelling of semi-permeable baffles have
been added. These baffles are permeable to a number of species within
the flow, and are impermeable to others. The flux of a given species is
calculated as a constant multipled by the drop in mass fraction across
the baffle.

The species mass-fraction condition requires the transfer constant and
the name of the patch on the other side of the baffle:

boundaryField
{
    // ...

    membraneA
    {
        type            semiPermeableBaffleMassFraction;
        samplePatch     membranePipe;
        c               0.1;
        value           uniform 0;
    }
    membraneB
    {
        type            semiPermeableBaffleMassFraction;
        samplePatch     membraneSleeve;
        c               0.1;
        value           uniform 1;
    }
}

If the value of c is omitted, or set to zero, then the patch is
considered impermeable to the species in question. The samplePatch entry
can also be omitted in this case.

The velocity condition does not require any special input:

boundaryField
{
    // ...

    membraneA
    {
        type            semiPermeableBaffleVelocity;
        value           uniform (0 0 0);
    }
    membraneB
    {
        type            semiPermeableBaffleVelocity;
        value           uniform (0 0 0);
    }
}

These two boundary conditions must be used in conjunction, and the
mass-fraction condition must be applied to all species in the
simulation. The calculation will fail with an error message if either is
used in isolation.

A tutorial, combustion/reactingFoam/RAS/membrane, has been added which
demonstrates this transfer process.

This work was done with support from Stefan Lipp, at BASF.

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

Patch contributed by Jakub Benda
Resolves bug-report https://bugs.openfoam.org/view.php?id=2727

Henry Weller authored 7 years ago and Andrew Heather committed 7 years ago

which avoids the need for field interpolation and snGrad specification and
evaluation.

Resolves patch request https://bugs.openfoam.org/view.php?id=2725

wallHeatFlux: Filter out coupled patches

Resolves bug-report https://bugs.openfoam.org/view.php?id=2776