The OpenFOAM Foundation is pleased to announce the release of version 8 of the OpenFOAM open source CFD toolbox. Version 8 is a snapshot of the OpenFOAM development version which, through sustainable development, is always-releasable. It provides new functionality and major improvements to existing code, with strict demands on usability, robustness and extensibility. OpenFOAM 8 includes the following key developments:

• Multiphase: selectable interpolation for interface-capturing, PLIC scheme.
• Reacting multiphase: consolidated multiphaseEulerFoam solver and model development.
• Transport: new MomentumTransportModels and ThermophysicalTransportModels libraries.
• Thermophysical: thermodynamics and equation of state models, data input, refactoring.
• Surface Film: huge performance improvements and better surface handling.
• Heat transfer: better numerics and case setup, new thermal comfort modelling.
• Particle tracking: renamed uncoupled solvers, improved tracking efficiency, injection.
• Other models: transient/steady-state solvers, boundary conditions, reactions.
• Mesh: improved snappyHexMesh and blockMesh, face centre calculation, cyclic patches.
• Function Objects: improved visualization/field, residence time and configuration.
• Case Configuration: new configuration/initialisation tools, coded Function1.
• Computation: better data I/O, field caching, support for Arm processors.

The OpenFOAM Foundation is pleased to announce the release of version 7 of the OpenFOAM open source CFD toolbox. Version 7 is a snapshot of the OpenFOAM development version which, through sustainable development, is always-releasable. It provides new functionality and major improvements to existing code, with strict demands on usability, robustness and extensibility. OpenFOAM 7 includes the following key developments:

• Heat transfer: consolidated solvers and improved convergence and robustness.
• Particle tracking: improved robustness and optimized computation.
• Multiphase: wave damping, configurable inlet phase properties, better settling numerics.
• Reacting multiphase models: heat transfer, population balance, breakup, coalescence, etc.
• Reactions/combustion: simplified case setup.
• Turbulence: improved consistency and stability of wall functions, added sources.
• Thermophysical: thermodynamic functions, temperature-strain-dependent viscosity.
• Other models: atmospheric, rigid body dynamics, boundary conditions, sources.
• Mesh: standardized dynamic mesh capability, improved motion solvers.
• Case Configuration: improved data visualization, setup tools, function objects.
• Computation: improvements to containers, fields, parallel running, etc.