It is now possible to calculate field values of VolInternalFields, e.g. the
cached kEpsilon:G field in the
tutorials/modules/incompressibleFluid/pitzDailySteady case:
#includeFunc cellMax(kEpsilon:G)
e.g. for the rivuletBox case the output for a time-step now looks like:
film Courant Number mean: 0.0003701330848 max: 0.1862204919
panel Diffusion Number mean: 0.007352456305 max: 0.1276468109
box Courant Number mean: 0.006324172752 max: 0.09030825997
deltaT = 0.001550908752
Time = 0.08294s
film diagonal: Solving for alpha, Initial residual = 0, Final residual = 0, No Iterations 0
film diagonal: Solving for alpha, Initial residual = 0, Final residual = 0, No Iterations 0
box diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
film DILUPBiCGStab: Solving for Ux, Initial residual = 0.009869417958, Final residual = 2.132619614e-11, No Iterations 2
film DILUPBiCGStab: Solving for Uy, Initial residual = 0.0002799662756, Final residual = 6.101011285e-12, No Iterations 1
film DILUPBiCGStab: Solving for Uz, Initial residual = 1, Final residual = 1.854120599e-12, No Iterations 2
box DILUPBiCGStab: Solving for Ux, Initial residual = 0.004071057403, Final residual = 4.79249226e-07, No Iterations 1
box DILUPBiCGStab: Solving for Uy, Initial residual = 0.006370817152, Final residual = 9.606673696e-07, No Iterations 1
box DILUPBiCGStab: Solving for Uz, Initial residual = 0.0158299327, Final residual = 2.104129791e-06, No Iterations 1
film DILUPBiCGStab: Solving for e, Initial residual = 0.0002888908396, Final residual = 2.301587523e-11, No Iterations 1
panel GAMG: Solving for e, Initial residual = 0.00878508958, Final residual = 7.807579738e-12, No Iterations 1
box DILUPBiCGStab: Solving for h, Initial residual = 0.004403989559, Final residual = 1.334113552e-06, No Iterations 1
film DILUPBiCGStab: Solving for alpha, Initial residual = 0.0002760406755, Final residual = 2.267583256e-14, No Iterations 1
film time step continuity errors : sum local = 9.01334987e-12, global = 2.296671859e-13, cumulative = 1.907846466e-08
box GAMG: Solving for p_rgh, Initial residual = 0.002842335602, Final residual = 1.036572819e-05, No Iterations 4
box diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
box time step continuity errors : sum local = 4.538744531e-07, global = 1.922637799e-08, cumulative = -6.612579497e-09
box GAMG: Solving for p_rgh, Initial residual = 1.283128787e-05, Final residual = 7.063185653e-07, No Iterations 2
box diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
box time step continuity errors : sum local = 3.069629869e-08, global = 3.780547824e-10, cumulative = -6.234524715e-09
ExecutionTime = 19.382601 s ClockTime = 20 s
film Courant Number mean: 0.0003684434169 max: 0.1840342756
panel Diffusion Number mean: 0.007352456305 max: 0.1276468109
box Courant Number mean: 0.006292704463 max: 0.09016861809
deltaT = 0.001550908752
Time = 0.0844909s
where each line printed by each region solver is prefixed by the region name.
Global messages for the time-step and time are just prefixed with spaces to
align them with the region output.
Class
Foam::filmSurfaceVelocityFvPatchVectorField
Description
Film surface velocity boundary condition
Evaluates the surface velocity from the shear imposed by the neighbouring
fluid velocity using a simple drag model based on the difference between the
fluid and film velocities multiplied by the coefficient \c Cs. This simple
model is used in preference to the standard viscous shear stress model in
order to provide some means to include the drag enhancing effect
of surface ripples, rivulets etc. in the film surface.
Usage
\table
Property | Description | Required | Default value
Cs | Fluid-film drag coefficient | yes |
\endtable
Example of the boundary condition specification:
\verbatim
<patchName>
{
type filmSurfaceVelocity;
Cs 0.005;
}
\endverbatim
mappedFilmPressureFvPatchScalarField is derived from the new mappedFvPatchField
base-class for mapped patch fields including mappedValueFvPatchField.
Class
Foam::mappedFilmPressureFvPatchScalarField
Description
Film pressure boundary condition which maps the neighbouring fluid patch
pressure to both the surface patch and internal film pressure field.
genericPatches is linked into mesh generation and manipulation utilities but not
solvers so that the solvers now check for the availability of the specified
patch types. Bugs in the tutorials exposed by this check have been corrected.
If the optional kinematic Bingham plastic yield stress sigmay [m^2/s^2] is
provided the viscosity is updated to include the Bingham plastic correction.
This fvModel applies a mass source to the continuity equation and to all
field equations, in a zero-dimensional case. Correction is made to
account for the mass that exits the domain due to expansion in space, so
that the model correctly applies a total mass flow rate. It is
implemented as a light wrapper around the massSource model.
This permits further non-conformal connnection types to store additional
or alternative information in the fvMesh::polyFacesBf patch fields.
Previously, this field just used calculated patch fields types.
This change has required an update to the fvsPatchFields to make their
handling of IO of the value field consistent with the fvPatchFields. The
base class no longer writes out the value field by default.
used in the alphaContactAngleFvPatchScalarField boundary condition to replace
the need to derive specialised versions for different contact angle evaluation
methods. This simplifies the code and provides a reusable system which could be
applied to other multiphase contact angle boundary conditions.
These are not used anywhere. interpolateSplineXY's functionality can be
achieved with a table function1, and patchToPatchInterpolation has been
superseded at least twice; first by AMI and then by patchToPatch/NCC.
Solver modules have replaced code that was previously shared between
solvers by means of #include-ing header files. Some of these headers are
now unused and have been removed. Others are only now used in a single
solver and have been moved into that solver.
This change applies to diameter models within the multiphaseEuler
module, heat transfer fvModels, and the LopesdaCosta porosity and
turbulence models.
User input changes have been made backwards-compatible, so existing
AoV/a/Sigma/... entries and fields should continue to work.
Stabilisation has been added to the mapping of fields between consistent
meshes. This means that if part of the target mesh is found not to
connect with the source mesh, then its values will be set by propagating
a value from the closest part of the target mesh did successfully
connect to the source. This propagation is achieved by means of a mesh
wave.
This stabilisation applies to both cell and patch fields, and any and
all ancillary fields that may be being stored by the patch boundary
conditions. It applies to the mapping performed by both mapFieldsPar and
the run-time mapping meshToMesh topology changer.
This fixes the previous situation in mapping between consistent meshes
in which target elements which did not connect to the source would be
given an undefined value, which would cause either a floating point
error, or (worse) incorrect operation.
Cell-to-cell interpolation has been moved to a hierarchy separate from
meshToMesh, called cellsToCells. The meshToMesh class is now a
combination of a cellsToCells object and multiple patchToPatch objects.
This means that when only cell-to-cell interpolation is needed a basic
cellsToCells object can be selected.
Cell-to-cell and vol-field-to-vol-field interpolation now has two well
defined sets of functions, with a clear distinction in how weights that
do not sum to unity are handled. Non-unity weights are either
normalised, or a left-over field is provided with which to complete the
weighted sum.
The left-over approach is now consistently applied in mapFieldsPar,
across both the internal and patch fields, if mapping onto an existing
field in the target case. Warning are now generated for invalid
combinations of settings, such as mapping between inconsistent meshes
without a pre-existing target field.
All mapping functions now take fields as const references and return tmp
fields. This avoids the pattern in which non-const fields are provided
which relate to the source, and at some point in the function transfer
to the target. This pattern is difficult to reason about and does not
provide any actual computational advantage, as the fields invariably get
re-allocated as part of the process anyway.
MeshToMesh no longer stores the cutting patches. The set of cutting
patches is not needed anywhere except at the point of mapping a field,
so it is now supplied to the mapping functions as an argument.
The meshToMesh topology changer no longer supports cutting patch
information. This did not previously work. Cutting patches either get
generated as calculated, or they require a pre-existing field to specify
their boundary condition. Neither of these options is suitable for a
run-time mesh change.
More code has been shared with patchToPatch, reducing duplication.
