177 lines
10 KiB
Groff
177 lines
10 KiB
Groff
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# -*- mode: org; -*-
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#
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#+TITLE: *OpenFOAM release notes for version 1.5*
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#+AUTHOR: Hrvoje Jasak.
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#+DATE: 19 August 2008
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#+LINK: http://www.wikki.co.uk
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#+OPTIONS: author:nil
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* Overview
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OpenFOAM-1.5 is is a significant upgrade to version 1.4 in ways which are
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outlined below. This release passes all our standard tests and the tutorials
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have been broadly checked. If there are any bugs, please report them using
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the instructions set out in: http://www.openfoam.org/bugs.html.
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Most of the developments for this release are in: new applications, e.g. for
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multiphase flow and cavitation, buoyancy-flow and heat transfer, high speed
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flows and even molecular dynamics; new utilities, e.g. for meshing and case
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monitoring; and, new modelling, e.g. in Lagrangian particle tracking,
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radiation and rotating frames of reference. With these new applications come
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numerous new example cases.
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* GNU/Linux version
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The 64bit binary packs of the OpenFOAM release were compiled on a machine
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running SuSE GNU/Linux version 10.3 and the 32bit on a machine running Ubuntu
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GNU/Linux version 7.1 and also tested on Ubuntu 8.04. We recommend that
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users run OpenFOAM on one of these or a similar recent version of GNU/Linux.
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This release has also been successfully compiled and tested on older GNU/Linux
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releases but this requires the installation of Qt 4.3.? for ParaView-3 to run.
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* C++ Compiler version
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+ Released compiled with GCC 4.3.1, the latest version.
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+ Built in support for the Intel C++ 10.? compiler (untested).
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+ The choice of the compiler is controlled by the setting of the $WM\_COMPILER
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and $WM\_COMPILER\_ARCH environment variables in the OpenFOAM-1.5/etc/bashrc
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(or cshrc) file.
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+ The location of the installation of the compiler is controlled by the
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$WM\_COMPILER\_INST environment variable in the OpenFOAM-1.5/etc/settings.sh
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(or settings.csh) file.
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* Developments to solvers (applications)
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+ New rhoCentralFoam solver for high-speed, viscous, compressible flows using
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non-oscillatory, central-upwind schemes.
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+ New interDyMFoam solver for 2 incompressible, isothermal, immiscible fluids
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using a VoF phase-fraction based interface capturing approach, with optional
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mesh motion and mesh topology changes including adaptive mesh
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(un)refinement. Useful for simulations such as tank filling, sloshing ---
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using solid body motion e.g. SDA or SKA (6DoF) --- and slamming (using the
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mesh motion solver) and other large-scale applications that benefit from the
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efficiency gain of adaptive mesh (un)refinement of the interface.
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+ New compressibleInterFoam solver for 2 compressible, isothermal, immiscible
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fluids using a volume of fluid (VoF) phase-fraction approach for
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interface-capturing. The momentum and other fluid properties are of the
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"mixture" and a single momentum equation is solved. Turbulence is modelled
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using a run-time selectable incompressible LES model.
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+ New interPhaseChangeFoam solver for 2 incompressible, isothermal, immiscible
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fluids with phase-change, e.g. cavitation. Uses VoF interface capturing,
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with momentum and other fluid properties described for the ``mixture'' and a
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single momentum equation is solved. The set of phase-change models provided
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are designed to simulate cavitation but other mechanisms of phase-change are
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supported within this solver framework.
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+ New rasCavitatingFoam solver for transient cavitation using a barotropic
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compressibility model, with RAS turbulence.
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+ New lesCavitatingFoam solver for transient cavitation using a barotropic
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compressibility model, with LES turbulence.
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+ New chtMultiRegionFoam solver that couples conjugate heat transfer in a
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solid to a buoyancy-driven flow simulation.
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+ New PDRFoam solver for compressible premixed/partially-premixed turbulent
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combustion that includes porosity/distributed resistance (PDR) modelling to
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handle regions containing solid blockages which cannot be resolved by the
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mesh. Requires the PDR fields.
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+ New lesBuoyantFoam solver for transient, buoyant, turbulent flow of
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compressible fluids for ventilation and heat-transfer. Turbulence is
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modelled using a run-time selectable compressible LES model.
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+ New rhoPimpleFoam solver for transient, turbulent flow of compressible
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fluids for ventilation and heat-transfer. Uses the flexible PIMPLE
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(PISO-SIMPLE) solution for time-resolved and pseudo-transient simulations.
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+ New buoyantSimpleRadiationFoam solver for steady-state, buoyant, turbulent
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flow of compressible fluids with radiation, for ventilation and
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heat-transfer.
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+ New rhoTurbTwinParcelFoam solver for transient for compressible, turbulent
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flow with two thermo-clouds.
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+ New gnemdFOAM solver for general purpose molecular dynamics that simulates
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atoms in arbitrary shaped domains and average atomic/molecular quantities to
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the mesh to create field data.
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+ New mdEqulibrationFoam solver to equilibrates and/or preconditions molecular
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dynamics systems.
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+ Demonstration SRFSimpleFoam solver based on simpleFoam that incorporates the
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SRF extensions (see below) for rotating flows.
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* Automatic mesher
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New snappyHexMesh utility that generates split-hex meshes automatically from
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triangulated (STL) surface geometries. The mesh approximately conforms to
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the surface by iteratively refining a starting mesh and morphing the
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resulting split-hex mesh to the surface. An optional phase will shrink back
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the resulting mesh and insert cell layers. It has a flexible specification
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of mesh refinement level and robust surface handling with a pre-specified
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final mesh quality. It runs in parallel with a load balancing step every
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iteration.
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* Developments to utilities
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+ New extrude2DMesh utility that extrudes 2D meshes into a 3D mesh. 2D meshes
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are described by faces with 2 points, so can be used in combination with 2D
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meshes converted with ccm26ToFoam.
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+ New couplePatches functionality integrated into createPatch, which
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optionally synchronises ("couples") points and faces of coupled (cyclic,
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processor) patches.
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+ New applyBoundaryLayer pre-processing utility to apply 1/7th power-law
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boundary layers at walls, starting from uniform or potential flow solutions.
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+ New execFlowFunctionObjects utility executes functionObjects as a
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post-processing activity, e.g. probes, sampling, force calculation.
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+ New changeDictionary utility makes batch changes to OpenFOAM input files,
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e.g. to change boundary conditions of field files.
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+ New foamCalc utility, a generic post-processing field calculator tool
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+ New molConfig pre-processing utility for molecular dynamics cases. Fills
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zones of a mesh with single crystal lattices of specified structure,
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density, orientation, alignment and temperature.
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+ Extended splitMeshRegions utility to split multi-zone meshes, e.g. defined
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through cellZones, into separate meshes.
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+ Extended the foamToVTK, decomposePar, reconstructPar and mapFields utilities
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to include support for multiple particle clouds in parallel processing.
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* Migration from ParaView 2.4 to ParaView 3.x
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+ Rewritten OpenFOAM Reader Module for version 3, a major redesign of
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ParaView.
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+ New features include viewing patch names, reading of Lagrangian data,
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handling of cell, face and point sets, multiple views.
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* Model development
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+ Overhauled the lagrangian library to support multiple clouds.
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+ New lagrangianIntermediate library incorporating a hierarchy of parcel and
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cloud types, accommodating kinematic, thermodynamic and reacting
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applications, including coupling to the new radiation library. Sub-models
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are added at the relevant level of physics, e.g.:
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- kinematic: injection, wall interaction, drag, dispersion;
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- thermo: heat transfer;
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- reacting: reacting composition, mass transfer, surface reactions.
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+ New single rotating frame of reference (SRF) library for rotating flow
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applications, e.g. turbo-machinery.
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+ New radiation library including the P1 model and associated Marshak boundary
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conditions for incident radiation.
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+ New displacementInterpolation motion solver for flexible mesh scaling.
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+ New molecularDynamics Lagrangian library to calculate intermolecular forces
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between spherically symmetrical monatomic species in arbitrary geometries.
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* New functionObjects
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To aid common monitoring and post-processing activities.
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+ forces: calculate the force and moment on a patch or set of patches, e.g. to
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calculate the lift, drag and moment of an object in the flow.
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+ forceCoeffs: calculate the normalised force and moment on a patch or set of
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patches, e.g. to calculate the lift, drag and moment coefficients of an
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object in the flow.
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+ fieldAverage: calculate field arithmetic mean and prime-squared averages for
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a list of fields.
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+ foamCalcFunctions: calculate field components, div, mag, magGrad or magSqr.
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* Improvements to boundary conditions
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+ Generalised jumpCyclic type: cyclic condition with an additional prescribed
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jump in value.
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+ fan type: specialisation of jumpCyclic, applying a prescribed jump in
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pressure to simulate a fan within a mesh.
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+ Generalised advective outflow boundary condition based on solving D/Dt(psi,
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U) = 0 at the boundary.
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+ Additional turbulent flow inlet to specify mixing length and frequency.
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+ Generalisation of time varying set of boundary conditions.
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* Other
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+ New argument-free command execution, e.g typing "icoFoam" without root and
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case directory arguments.
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+ Extended time command line options.
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+ Many enhancements to dictionary including macro substitution, optional
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merging and default/overwrite behaviour, enhanced "#include" file handling
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and the framework to support function evaluation.
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+ Cross-links between applications and Doxygen documentation with the "-doc"
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argument.
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+ Non-blocking, non-buffered, parallel transfers with potential scaling
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benefits for larger number of processors.
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