This fixes situations in which the mapping is used between a region with
a changing mesh and a region with a non-changing mesh, and where the
non-changing-mesh region owns the mapping. It ensures that changes in
the changing-mesh region trigger re-generation of the mapping in the
adjacent non-changing-mesh region.
Added the iterative improvement stage detailed at the end of section 4
of the reference:
DiDonato, A. R., & Morris Jr, A. H. (1986).
Computation of the incomplete gamma function ratios and their inverse.
ACM Transactions on Mathematical Software (TOMS), 12(4), 377-393.
If divU is valid the velocity divergence is included in the pcorr equation.
This simplifies the logic in multiphase moveMesh functions supporting
incompressible (with or without mass sources) and compressible fluids.
The mixture compressibility/density is now included in CorrectPhi for
compressible mixtures, consistent with the compressibility handling in the
pressure equation. This improves consistency, robustness and convergence of the
pcorr equation.
The computation of the current and total accumulated mass is now shared
across all zeroDimensionalMassSource models. So, multiple models can be
used simultaneously.
If a negative mass flow rate is specified, the mass source fvModel will
now remove mass by adding implicit sources to the transport equations.
Properties are thereby removed at their current value. This is stable,
and is analogous to a zero-gradient outlet boundary condition.
to provide the old-time absolute flux. This avoids possible
pressure-velocity-flux decoupling (staggering) within the MRF region using
ddtCorr to better couple the velocity and flux fields.
The current mesh is now swapped with the new mesh prior to the mapping
of fields and other properties. Previously the new mesh was copied into
the current mesh.
This change means that both meshes are valid during the mapping
operation, and properties of either can be used. It should also now be
be more efficient as a swap operation just exchanges list pointers and
sizes, whilst a copy requires duplicating all the primitive mesh data.
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.
