For example in the potentialFreeSurfaceFoam/oscillatingBox tutorial it is
cleaner to apply the "linearRamp" function to the "sine" function rather than
using an amplitude table:

    floatingObject
    {
        type            fixedNormalInletOutletVelocity;

        fixTangentialInflow false;

        normalVelocity
        {
            type            uniformFixedValue;

            uniformValue
            {
                type        scale;

                value
                {
                    type sine;

                    frequency   1;
                    amplitude   0.025;
                    scale       (0 1 0);
                    level       (0 0 0);
                }

                scale
                {
                    type linearRamp;

                    duration 10;
                }
            }
        }

        value           uniform (0 0 0);
    }

with more general forms of those functions.

including support for TDAC and ISAT for efficient chemistry calculation.

Description
    Eddy Dissipation Concept (EDC) turbulent combustion model.

    This model considers that the reaction occurs in the regions of the flow
    where the dissipation of turbulence kinetic energy takes place (fine
    structures). The mass fraction of the fine structures and the mean residence
    time are provided by an energy cascade model.

    There are many versions and developments of the EDC model, 4 of which are
    currently supported in this implementation: v1981, v1996, v2005 and
    v2016.  The model variant is selected using the optional \c version entry in
    the \c EDCCoeffs dictionary, \eg

    \verbatim
        EDCCoeffs
        {
            version v2016;
        }
    \endverbatim

    The default version is \c v2015 if the \c version entry is not specified.

    Model versions and references:
    \verbatim
        Version v2005:

            Cgamma = 2.1377
            Ctau = 0.4083
            kappa = gammaL^exp1 / (1 - gammaL^exp2),

            where exp1 = 2, and exp2 = 2.

            Magnussen, B. F. (2005, June).
            The Eddy Dissipation Concept -
            A Bridge Between Science and Technology.
            In ECCOMAS thematic conference on computational combustion
            (pp. 21-24).

        Version v1981:

            Changes coefficients exp1 = 3 and exp2 = 3

            Magnussen, B. (1981, January).
            On the structure of turbulence and a generalized
            eddy dissipation concept for chemical reaction in turbulent flow.
            In 19th Aerospace Sciences Meeting (p. 42).

        Version v1996:

            Changes coefficients exp1 = 2 and exp2 = 3

            Gran, I. R., & Magnussen, B. F. (1996).
            A numerical study of a bluff-body stabilized diffusion flame.
            Part 2. Influence of combustion modeling and finite-rate chemistry.
            Combustion Science and Technology, 119(1-6), 191-217.

        Version v2016:

            Use local constants computed from the turbulent Da and Re numbers.

            Parente, A., Malik, M. R., Contino, F., Cuoci, A., & Dally, B. B.
            (2016).
            Extension of the Eddy Dissipation Concept for
            turbulence/chemistry interactions to MILD combustion.
            Fuel, 163, 98-111.
    \endverbatim

Tutorials cases provided: reactingFoam/RAS/DLR_A_LTS, reactingFoam/RAS/SandiaD_LTS.

This codes was developed and contributed by

    Zhiyi Li
    Alessandro Parente
    Francesco Contino
    from BURN Research Group

and updated and tested for release by

    Henry G. Weller
    CFD Direct Ltd.

to provide smoother behavior on start-up when an acceleration impulse is
applied, e.g. if the body is suddenly released.  e.g.

dynamicFvMesh       dynamicMotionSolverFvMesh;

motionSolverLibs   ("librigidBodyMeshMotion.so");

solver             rigidBodyMotion;

rigidBodyMotionCoeffs
{
    report          on;

    solver
    {
        type    Newmark;
    }

    ramp
    {
        type     quadratic;
        start    0;
        duration 10;
    }
.
.
.

will quadratically ramp the forces from 0 to their full values over the first
10s of the run starting from 0.  If the 'ramp' entry is omitted no force ramping
is applied.

Description
    Ramp function base class for the set of scalar functions starting from 0 and
    increasing monotonically to 1 from \c start over the \c duration and
    remaining at 1 thereafter.

    Usage:
    \verbatim
        <entryName> <rampFunction>;
        <entryName>Coeffs
        {
            start     10;
            duration  20;
        }
    \endverbatim
    or
    \verbatim
        <entryName>
        {
            type      <rampFunction>;
            start     10;
            duration  20;
        }
    \endverbatim

    Where:
    \table
        Property | Description  | Required | Default value
        start    | Start time   | no       | 0
        duration | Duration     | yes      |
    \endtable

The following common ramp functions are provided: linear, quadratic, halfCosine,
quarterCosine and quaterSine, others can easily be added and registered to the run-time
selection system.

e.g.
    ramp
    {
        type     quadratic;
        start    200;
        duration 1.6;
    }

but the old format is supported for backward compatibility:

    ramp linear;
    rampCoeffs
    {
        start    200;
        duration 1.6;
    }

of the specified type

2D buoyancy-driven flow between flat plates with small temperature difference

e.g. postProcess -time 0.001 -func dsmcFields

Resolves bug-report https://bugs.openfoam.org/view.php?id=2499

Resolves patch request https://bugs.openfoam.org/view.php?id=2490

Set default value of C3 to 0
Set C3 to -0.33 in the engineFoam/kivaTest tutorial.

Resolves bug-report https://bugs.openfoam.org/view.php?id=2496

Resolves bug-report https://bugs.openfoam.org/view.php?id=2492

Resolves bug-report https://bugs.openfoam.org/view.php?id=2491

Formally this is equivalent to the previous formulation but more convenient to
use given that for compressible flow the mass flux rather than the volume flux
is available.

sixDoFRigidBodyDisplacementPointPatchVectorField, uncoupledSixDoFRigidBodyDisplacementPointPatchVectorField: removed

These legacy boundary conditions are no longer needed and have been superseded
by the more flexible sixDoFRigidBodyMotion and rigidBodyMotion solvers.  See tutorials:

incompressible/pimpleDyMFoam/wingMotion/wingMotion2D_pimpleDyMFoam
multiphase/interDyMFoam/RAS/DTCHull
multiphase/interDyMFoam/RAS/floatingObject

Resolves bug-report https://bugs.openfoam.org/view.php?id=2487

Resolves bug-report https://bugs.openfoam.org/view.php?id=2459

Resolves bug-report https://bugs.openfoam.org/view.php?id=2489

Using

decomposePar -copyZero

The mesh is decomposed as usual but the '0' directory is recursively copied to
the 'processor.*' directories rather than decomposing the fields.  This is a
convenient option to handle cases where the initial field files are generic and
can be used for serial or parallel running.  See for example the
incompressible/simpleFoam/motorBike tutorial case.

Patch contributed by Mattijs Janssens

Fewer limiter iterations are now required to obtain sufficient boundedness and
restart is more consistent.

PBiCGStab has proved more reliable than PCG for solving the pressure equation in
compressible systems.

Resolves bug-report https://bugs.openfoam.org/view.php?id=2475