In the initialisation of population balance cases, different types of size distribution can be specified, e.g. in different zones of the mesh in #OpenFOAM-dev github.com/OpenFOAM/Ope...
functionObjects::populationBalanceSetSizeDistribution: Improvements · OpenFOAM/OpenFOAM-dev@78b0e81
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November 9, 2026 at 1:03 PM
In the initialisation of population balance cases, different types of size distribution can be specified, e.g. in different zones of the mesh in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Reaction rates have been optimised using the reaction::state derived data in #OpenFOAM-dev github.com/OpenFOAM/Ope...
reactionRate: Optimised using reaction::state · OpenFOAM/OpenFOAM-dev@9fbe83d
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November 6, 2026 at 1:02 PM
Reaction rates have been optimised using the reaction::state derived data in #OpenFOAM-dev github.com/OpenFOAM/Ope...
New solidDisplacement mesh mover calculates vertex motion from the interpolated displacement field of the solidDisplacement solver in #OpenFOAM-dev github.com/OpenFOAM/Ope...
src/fvMeshMovers/Allwmake: Added solidDisplacement · OpenFOAM/OpenFOAM-dev@de700f7
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November 5, 2026 at 1:02 PM
New solidDisplacement mesh mover calculates vertex motion from the interpolated displacement field of the solidDisplacement solver in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Optimised the Cholesky decomposition with ikj-loop implementation in #OpenFOAM-dev github.com/OpenFOAM/Ope...
LUDecompose(scalarSymmetricSquareMatrix& A): New ikj-loop implementat… · OpenFOAM/OpenFOAM-dev@fa89a81
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November 4, 2026 at 1:01 PM
Optimised the Cholesky decomposition with ikj-loop implementation in #OpenFOAM-dev github.com/OpenFOAM/Ope...
In chemisty modelling, the high and low temperature limits are applied before the reaction rate evaluation in #OpenFOAM-dev github.com/OpenFOAM/Ope...
chemistryModels::Standard: Rationalised handling of Tlow and Thigh li… · OpenFOAM/OpenFOAM-dev@9dfdc49
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November 3, 2026 at 1:00 PM
In chemisty modelling, the high and low temperature limits are applied before the reaction rate evaluation in #OpenFOAM-dev github.com/OpenFOAM/Ope...
In the multiphaseEuler solver, blending can be applied to the interface compression coefficient in order to switch interface compression on or off in certain zones or in the presence of third phases, in #OpenFOAM-dev github.com/OpenFOAM/Ope...
multiphaseEuler: Blending interface compression coefficient · OpenFOAM/OpenFOAM-dev@ccbcaf7
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November 2, 2026 at 1:00 PM
In the multiphaseEuler solver, blending can be applied to the interface compression coefficient in order to switch interface compression on or off in certain zones or in the presence of third phases, in #OpenFOAM-dev github.com/OpenFOAM/Ope...
The standard chemistry model integrates the mass fractions and temperature of a reaction system at constant pressure, adding pressure instead into the reaction rate evaluation for greater efficiency in #OpenFOAM-dev github.com/OpenFOAM/Ope...
chemistryModels::Standard: Removed pressure from the ODE integration · OpenFOAM/OpenFOAM-dev@604bc31
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October 30, 2026 at 1:00 PM
The standard chemistry model integrates the mass fractions and temperature of a reaction system at constant pressure, adding pressure instead into the reaction rate evaluation for greater efficiency in #OpenFOAM-dev github.com/OpenFOAM/Ope...
In chemistry models, added limiting to avoid temperature overshoots if the ODE integrator starts with an excessively large time step in #OpenFOAM-dev github.com/OpenFOAM/Ope...
chemistryModels::Standard: Added temperature limiting in derivatives … · OpenFOAM/OpenFOAM-dev@9e4f1b9
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October 29, 2026 at 1:59 PM
In chemistry models, added limiting to avoid temperature overshoots if the ODE integrator starts with an excessively large time step in #OpenFOAM-dev github.com/OpenFOAM/Ope...
In the ODE solvers, the default tolerance can now be overridden with the "rowTol" parameter used to filter rows with a very small multiplier in #OpenFOAM-dev github.com/OpenFOAM/Ope...
ODESolvers: Added optional rowTol control to semi-implicit ODE solvers · OpenFOAM/OpenFOAM-dev@759025f
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October 28, 2026 at 1:57 PM
In the ODE solvers, the default tolerance can now be overridden with the "rowTol" parameter used to filter rows with a very small multiplier in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Added the pLogReactionRate model which calculates a reaction rate coefficient by a logarithmic interpolation of pressure-dependent Arrhenius rate coefficients github.com/OpenFOAM/Ope...
pLogReactionRate: New pressure dependent reaction rate coefficient · OpenFOAM/OpenFOAM-dev@85cda96
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October 27, 2026 at 1:56 PM
Added the pLogReactionRate model which calculates a reaction rate coefficient by a logarithmic interpolation of pressure-dependent Arrhenius rate coefficients github.com/OpenFOAM/Ope...
In mesh-to-mesh mapping, new 'multiNearest' extrapolation avoids discontinuties between values when mapping introduces a new connection between regions of mesh in #OpenFOAM-dev github.com/OpenFOAM/Ope...
meshToMesh: Improved extrapolation to un-mapped cells · OpenFOAM/OpenFOAM-dev@d7787a3
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October 26, 2026 at 1:55 PM
In mesh-to-mesh mapping, new 'multiNearest' extrapolation avoids discontinuties between values when mapping introduces a new connection between regions of mesh in #OpenFOAM-dev github.com/OpenFOAM/Ope...
ODE solvers have been optimised with ikj-loop LU decomposition, giving 10x and more speedup for complex chemistry calculations in #OpenFOAM-dev github.com/OpenFOAM/Ope...
LUDecompose: New optimised ikj-loop LU decomposition with tolerance b… · OpenFOAM/OpenFOAM-dev@5e2f2ea
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October 23, 2026 at 12:51 PM
ODE solvers have been optimised with ikj-loop LU decomposition, giving 10x and more speedup for complex chemistry calculations in #OpenFOAM-dev github.com/OpenFOAM/Ope...
In the multiphaseEuler solver, a family of models has been added for blending in sub-models in #OpenFOAM-dev github.com/OpenFOAM/Ope...
multiphaseEuler: Improved control over sub-model blending · OpenFOAM/OpenFOAM-dev@9eaaf17
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October 22, 2026 at 12:48 PM
In the multiphaseEuler solver, a family of models has been added for blending in sub-models in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Solid body motion now includes a relative motion function between bodies in #OpenFOAM-dev github.com/OpenFOAM/Ope...
solidBodyMotionFunctions::relativeMotion: New solidBodyMotionFunction… · OpenFOAM/OpenFOAM-dev@f30ee70
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October 21, 2026 at 12:47 PM
Solid body motion now includes a relative motion function between bodies in #OpenFOAM-dev github.com/OpenFOAM/Ope...
#OpenFOAM-dev has been updated from using the C++14 Standard to C++17 github.com/OpenFOAM/Ope...
C++ standard: Updated from C++14 to C++17 · OpenFOAM/OpenFOAM-dev@079b1e7
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October 20, 2026 at 12:46 PM
#OpenFOAM-dev has been updated from using the C++14 Standard to C++17 github.com/OpenFOAM/Ope...
Scalar transport (for single- and multi-phase) can use a specified diffusivty field in #OpenFOAM-dev github.com/OpenFOAM/Ope...
scalarTransport, phaseScalarTransport: Added 'diffusivity field;' option · OpenFOAM/OpenFOAM-dev@e3de59e
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October 19, 2026 at 12:46 PM
Scalar transport (for single- and multi-phase) can use a specified diffusivty field in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Size distribution in multiphase simulations can be processed across NCC interfaces in #OpenFOAM-dev github.com/OpenFOAM/Ope...
regionSizeDistribution: Made compatible with nonConformalCoupled · OpenFOAM/OpenFOAM-dev@045c3c8
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October 16, 2026 at 12:45 PM
Size distribution in multiphase simulations can be processed across NCC interfaces in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Functions like 'pow' are 'eagerly' evaluated to work with expression templates in #OpenFOAM-dev github.com/OpenFOAM/Ope...
scalarExpressions::pow: Expression support uses the new BinaryEagerFu… · OpenFOAM/OpenFOAM-dev@33e6075
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October 15, 2026 at 12:44 PM
Functions like 'pow' are 'eagerly' evaluated to work with expression templates in #OpenFOAM-dev github.com/OpenFOAM/Ope...
New limitGroupSurfaceAreaVolumeRatio fvConstraint limits group surface-area:volume ratio for population balance in #OpenFOAM-dev github.com/OpenFOAM/Ope...
populationBalance: New fvConstraint to limit group surface-area-volum… · OpenFOAM/OpenFOAM-dev@c22fe8b
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October 14, 2026 at 12:43 PM
New limitGroupSurfaceAreaVolumeRatio fvConstraint limits group surface-area:volume ratio for population balance in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Built expression templates into more fvc:: and fvi:: functions in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Commits · OpenFOAM/OpenFOAM-dev
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October 13, 2026 at 11:42 AM
Built expression templates into more fvc:: and fvi:: functions in #OpenFOAM-dev github.com/OpenFOAM/Ope...
In the multiphaseEuler solver, it is possible to specify different phase-change models for different size-groups of a population balance in #OpenFOAM-dev github.com/OpenFOAM/Ope...
multiphaseEuler: Add support for size-specific phase-change models · OpenFOAM/OpenFOAM-dev@ec69006
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October 12, 2026 at 12:39 PM
In the multiphaseEuler solver, it is possible to specify different phase-change models for different size-groups of a population balance in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Updated algebraic operations for expression templates in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Commits · OpenFOAM/OpenFOAM-dev
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October 9, 2026 at 12:46 PM
Updated algebraic operations for expression templates in #OpenFOAM-dev github.com/OpenFOAM/Ope...
Expression templates have replaced macro functions and operators for algebra of GeometricField in #OpenFOAM-dev — a more flexible, extensible and convenient approach to field operation and manipulation, the cornerstone of OpenFOAM github.com/OpenFOAM/Ope...
GeometricField: Replaced tmp field algebra with expression templating · OpenFOAM/OpenFOAM-dev@0c3a3b3
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October 8, 2026 at 12:38 PM
Expression templates have replaced macro functions and operators for algebra of GeometricField in #OpenFOAM-dev — a more flexible, extensible and convenient approach to field operation and manipulation, the cornerstone of OpenFOAM github.com/OpenFOAM/Ope...
In #OpenFOAM-dev, the boundary() function applied to GeometricField returns a GeometricBoundaryField, used to evaluate and manipulate boundary conditions; boundaryField() returns a list of patchFields on which field algebra can be performed. github.com/OpenFOAM/Ope...
GeometricField: Separated access to the GeometricBoundaryField and un… · OpenFOAM/OpenFOAM-dev@79d4e9e
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October 7, 2026 at 12:03 PM
In #OpenFOAM-dev, the boundary() function applied to GeometricField returns a GeometricBoundaryField, used to evaluate and manipulate boundary conditions; boundaryField() returns a list of patchFields on which field algebra can be performed. github.com/OpenFOAM/Ope...
New PtrField class stored a field of objects which are dynamically allocated and stored within a PtrList in #OpenFOAM-dev github.com/OpenFOAM/Ope...
PtrField: New expression templated field of objects which are dynamic… · OpenFOAM/OpenFOAM-dev@42fff1e
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October 6, 2026 at 12:03 PM
New PtrField class stored a field of objects which are dynamically allocated and stored within a PtrList in #OpenFOAM-dev github.com/OpenFOAM/Ope...