OpenFOAM-1.5 is is a significant upgrade to version 1.4 in ways which are
outlined below. This release passes all our standard tests and the tutorials have
been broadly checked. If there are any bugs, please report them using the
instructions set out in: http://www.openfoam.org/bugs.html.
Most of the developments for this release are in: new applications, e.g. for
multiphase flow and cavitation, buoyancy-flow and heat transfer, high speed flows
and even molecular dynamics; new utilities, e.g. for meshing and case monitoring;
and, new modelling, e.g. in Lagrangian particle tracking, radiation and rotating
frames of reference. With these new applications come numerous new example
cases.
2 GNU/Linux version
The 64bit binary packs of the OpenFOAM release were compiled on a machine
running SuSE GNU/Linux version 10.2 and the 32bit on a machine running
Ubuntu GNU/Linux version 7.1. The release has also been tested on SuSE 10.0,
10.3 and Ubuntu 8.04. We recommend that users run OpenFOAM on one of these
or a similar recent version of GNU/Linux.
3 C++ Compiler version
Released compiled with GCC 4.3.1, the latest version.
Built in support for the Intel C++ 10.? compiler (untested).
The choice of the compiler is controlled by the setting of the
$WM_COMPILER and $WM_COMPILER_ARCH environment variables in the
OpenFOAM-1.5/etc/bashrc (or cshrc) file.
The location of the installation of the compiler
is controlled by the $WM_COMPILER_INST environment variable in the
OpenFOAM-1.5/etc/settings.sh (or settings.csh) file.
4 Developments to solvers (applications)
New rhoCentralFoam solver for high-speed, viscous, compressible flows
using non-oscillatory, central-upwind schemes.
New interDyMFoam solver for 2 incompressible, isothermal, immiscible
fluids using a VoF phase-fraction based interface capturing approach,
with optional mesh motion and mesh topology changes including
adaptive mesh (un)refinement. Useful for simulations such as tank
filling, sloshing -- using solid body motion e.g. SDA or SKA (6DoF)
-- and slamming (using the mesh motion solver) and other large-scale
applications that benefit from the efficiency gain of adaptive mesh
(un)refinement of the interface.
New compressibleInterFoam solver for 2 compressible, isothermal,
immiscible fluids using a volume of fluid (VoF) phase-fraction approach
for interface-capturing. The momentum and other fluid properties are
of the “mixture” and a single momentum equation is solved. Turbulence
is modelled using a run-time selectable incompressible LES model.
New interPhaseChangeFoam solver for 2 incompressible, isothermal,
immiscible fluids with phase-change, e.g. cavitation. Uses VoF interface
capturing, with momentum and other fluid properties described for
the “mixture” and a single momentum equation is solved. The set of
phase-change models provided are designed to simulate cavitation but
other mechanisms of phase-change are supported within this solver
framework.
New rasCavitatingFoam solver for transient cavitation using a
barotropic compressibility model, with RAS turbulence.
New lesCavitatingFoam solver for transient cavitation using a
barotropic compressibility model, with LES turbulence.
New chtMultiRegionFoam solver that couples conjugate heat transfer
in a solid to a buoyancy-driven flow simulation.
New PDRFoam solver for compressible premixed/partially-premixed
turbulent combustion that includes porosity/distributed resistance
(PDR) modelling to handle regions containing solid blockages which
cannot be resolved by the mesh. Requires the PDR fields.
New lesBuoyantFoam solver for transient, buoyant, turbulent flow of
compressible fluids for ventilation and heat-transfer. Turbulence is
modelled using a run-time selectable compressible LES model.
New rhoPimpleFoam solver for transient, turbulent flow of compressible
fluids for ventilation and heat-transfer. Uses the flexible PIMPLE
(PISO-SIMPLE) solution for time-resolved and pseudo-transient
simulations.
New buoyantSimpleRadiationFoam solver for steady-state, buoyant,
turbulent flow of compressible fluids with radiation, for ventilation and
heat-transfer.
New rhoTurbTwinParcelFoam solver for transient for compressible,
turbulent flow with two thermo-clouds.
New gnemdFOAM solver for general purpose molecular dynamics
that simulates atoms in arbitrary shaped domains and average
atomic/molecular quantities to the mesh to create field data.
New mdEqulibrationFoam solver to equilibrates and/or preconditions
molecular dynamics systems.
Demonstration SRFSimpleFoam solver based on simpleFoam that
incorporates the SRF extensions (see below) for rotating flows.
5 Automatic mesher
New snappyHexMesh utility that generates split-hex meshes automatically
from triangulated (STL) surface geometries. The mesh approximately conforms
to the surface by iteratively refining a starting mesh and morphing the
resulting split-hex mesh to the surface. An optional phase will shrink back
the resulting mesh and insert cell layers. It has a flexible specification of
mesh refinement level and robust surface handling with a pre-specified
final mesh quality. It runs in parallel with a load balancing step every
iteration.
6 Developments to utilities
New extrude2DMesh utility that extrudes 2D meshes into a 3D mesh.
2D meshes are described by faces with 2 points, so can be used in
combination with 2D meshes converted with ccm26ToFoam.
New couplePatches functionality integrated into createPatch, which
optionally synchronises (‘couples’) points and faces of coupled (cyclic,
processor) patches.
New applyBoundaryLayer pre-processing utility to apply 1/7th
power-law boundary layers at walls, starting from uniform or potential
flow solutions.
New execFlowFunctionObjects utility executes functionObjects as a
post-processing activity, e.g. probes, sampling, force calculation.
New changeDictionary utility makes batch changes to OpenFOAM
input files, e.g. to change boundary conditions of field files.
New foamCalc utility, a generic post-processing field calculator tool
New molConfig pre-processing utility for molecular dynamics cases.
Fills zones of a mesh with single crystal lattices of specified structure,
density, orientation, alignment and temperature.
Extended splitMeshRegions utility to split multi-zone meshes,
e.g. defined through cellZones, into separate meshes.
Extended the foamToVTK, decomposePar, reconstructPar and
mapFields utilities to include support for multiple particle clouds in
parallel processing.
7 Migration from ParaView 2.4 to ParaView 3.x
Rewritten OpenFOAM Reader Module for version 3, a major redesign
of ParaView.
New features include viewing patch names, reading of Lagrangian data,
handling of cell, face and point sets, multiple views.
8 Model development
Overhauled the lagrangian library to support multiple clouds.
New lagrangianIntermediate library incorporating a hierarchy of parcel
and cloud types, accommodating kinematic, thermodynamic and
reacting applications, including coupling to the new radiation library.
Sub-models are added at the relevant level of physics, e.g.
reacting: reacting composition, mass transfer, surface reactions.
New single rotating frame of reference (SRF) library for rotating flow
applications, e.g. turbo-machinery.
New radiation library including the P1 model and associated Marshak
boundary conditions for incident radiation.
New displacementInterpolation motion solver for flexible mesh scaling.
New molecularDynamics Lagrangian library to calculate intermolecular
forces between spherically symmetrical monatomic species in arbitrary
geometries.
9 New functionObjects
To aid common monitoring and post-processing activities.
forces: calculate the force and moment on a patch or set of patches,
e.g. to calculate the lift, drag and moment of an object in the flow.
forceCoeffs: calculate the normalised force and moment on a patch or
set of patches, e.g. to calculate the lift, drag and moment coefficients
of an object in the flow.
fieldAverage: calculate field arithmetic mean and prime-squared
averages for a list of fields.
foamCalcFunctions: calculate field components, div, mag, magGrad or
magSqr.
10 Improvements to boundary conditions
Generalised jumpCyclic type: cyclic condition with an additional
prescribed jump in value.
fan type: specialisation of jumpCyclic, applying a prescribed jump in
pressure to simulate a fan within a mesh.
Generalised advective outflow boundary condition based on solving
DDt(psi, U) = 0 at the boundary.
Additional turbulent flow inlet to specify mixing length and frequency.
Generalisation of time varying set of boundary conditions.
11 Other
New argument-free command execution, e.g typing “icoFoam” without
root and case directory arguments.
Extended time command line options.
Many enhancements to dictionary
including macro substitution, optional merging and default/overwrite
behaviour, enhanced “#include” file handling and the framework to
support function evaluation.
Cross-links between applications and Doxygen documentation with the
“-doc” argument.
Non-blocking, non-buffered, parallel transfers with potential scaling
benefits for larger number of processors.
