Reusable structure.

Adaptive time-step controls used by tutorials that declare them.

• adjust_time_stepvalue · bool

  Allow the solver to adjust deltaT to satisfy its Courant-number controls.

• max_covalue · float64

  Maximum Courant number used by the solver's adaptive time-step logic.

  Condition: {.} > 0

Upper bound on the adaptive time-step size.

• max_delta_tvalue · float64

  Largest time-step the solver may select when adjusting deltaT.

  Condition: {.} > 0

Interface transport controls for the interFoam phase-fraction solver.

• correctionsvalue · int32

  Number of phase-fraction correction passes per time step.

  Condition: {.} >= 1
• subcyclesvalue · int32

  Number of phase-fraction sub-cycles within each time step.

  Condition: {.} >= 1
• compression_coefficientvalue · float64

  Interface-compression strength used by the phase-fraction equation.

  Condition: {.} >= 0
• limiter_iterationsvalue · int32

  Number of limiter iterations for the phase-fraction equation.

  Condition: {.} >= 1
• multi_correctionvalue · bool

  Enable the MULES correction loop for phase-fraction transport.

• tolerancevalue · float64

  Absolute residual at which the phase-fraction linear solver may stop.

  Condition: {.} > 0
• relative_tolerancevalue · float64

  Relative residual reduction for the phase-fraction linear solver.

  Condition: {.} >= 0

User-selected OpenFOAM v2606 build configuration.

• compiler_typevalue · str

  Select whether OpenFOAM uses system tools or compilers from its ThirdParty configuration.

  Options: system, ThirdParty
• compilervalue · str

  Select the compiler family used to build OpenFOAM. Availability depends on the host platform.

  Options: Gcc, Clang, Icc, Icx, Amd, Arm, Cray, Fujitsu, Nvidia, Mingw
• precisionvalue · str

  Select double, single, or mixed scalar precision for the compiled OpenFOAM libraries and applications.

  Options: DP, SP, SPDP
• label_bitsvalue · int32

  Select the bit width used for OpenFOAM integer labels, such as cell and face indices.

  Options: 32, 64
• compile_modevalue · str

  Select optimized, debug, or profiling compiler rules.

  Options: Opt, Dbg, Debug, Prof
• mpivalue · str

  Select the MPI implementation used when compiling parallel OpenFOAM applications.

  Options: SYSTEMOPENMPI, OPENMPI, SYSTEMMPI, MPI, MPICH, INTELMPI, USERMPI
• openmpvalue · bool

  Enable or disable OpenMP compiler and linker flags.

• target_bitsvalue · int32

  Select the target architecture width where supported by the host compiler and operating system.

  Options: 32, 64

Shared solver start, stop, step, and write scheduling controls.

• start_fromvalue · str

  Select whether the case starts from its configured start time or the latest written time.

  Options: startTime, latestTime
• start_timevalue · float64

  Starting value of the solver's native time coordinate. The solver determines its physical interpretation.

• end_timevalue · float64

  End value of the solver's native time coordinate; for steady solvers this can represent iteration time.

  Condition: {.} > {?control.start_time}
• stop_atvalue · str

  Select the condition that stops the solver.

  Options: endTime, writeNow, noWriteNow
• delta_tvalue · float64

  Time-step value used by the native solver. Stability and physical meaning remain solver-specific.

  Condition: {.} > 0
• write_controlvalue · str

  Native write scheduling mode used by the selected tutorial.

  Options: timeStep, adjustable
• write_intervalvalue · float64

  Output interval; its meaning is selected by write_control (steps or solver-time units).

  Condition: {.} > 0

• correctorsvalue · int32

  Number of correction passes in this solver-specific algorithm block.

  Condition: {.} >= 1

Default finite-volume discretization choices shared by the selected tutorials.

• time_derivativevalue · str

  Default time-derivative scheme from system/fvSchemes.

• gradientvalue · str

  Default gradient reconstruction scheme from system/fvSchemes.

• laplacianvalue · str

  Default Laplacian scheme, including its surface-normal gradient treatment.

• interpolationvalue · str

  Default interpolation scheme from cell centers to faces.

• surface_normal_gradientvalue · str

  Default surface-normal gradient scheme.

Default divergence scheme used by the selected OpenFOAM tutorial.

• defaultvalue · str

  Fallback discretization for divergence terms without a more specific entry.

Explicit phase-flow divergence schemes used by the interFoam dam-break tutorial.

• density_velocityvalue · str

  Divergence scheme for the density-weighted momentum flux.

• phase_fractionvalue · str

  Divergence scheme for transport of the phase fraction.

• phase_compressionvalue · str

  Divergence scheme for the phase-compression flux.

Linear solver stopping criteria from the solvers subdictionary in system/fvSolution.

• tolerancevalue · float64

  Absolute residual at which the linear solver may stop.

  Condition: {.} > 0
• relative_tolerancevalue · float64

  Relative residual reduction required before the linear solver may stop.

  Condition: {.} >= 0

Controls for retaining and formatting simulation output.

• purge_writevalue · int32

  Number of recent time directories to retain; zero keeps all written times.

  Condition: {.} >= 0
• write_formatvalue · str

  Representation used for written field data.

  Options: ascii, binary
• write_precisionvalue · int32

  Significant digits used when writing scalar values.

  Condition: {.} > 0
• write_compressionvalue · str

  Whether written output files are compressed.

  Options: on, off
• time_formatvalue · str

  Formatting mode for time-directory names.

• time_precisionvalue · int32

  Precision used when formatting time-directory names.

  Condition: {.} > 0
• run_time_modifiablevalue · bool

  Whether the solver rereads supported dictionaries while running.

Additional adaptive time-step limit for phase-fraction transport.

• max_alpha_covalue · float64

  Maximum phase Courant number used by interFoam's adaptive time-step control.

  Condition: {.} > 0

Transport properties for one phase in a multiphase case.

• transport_modelvalue · str

  Constitutive transport model used for this phase.

• kinematic_viscosityvalue · float64 · m2/s

  Kinematic viscosity of this phase.

  Condition: {.} > 0 m2/s
• densityvalue · float64 · kg/m3

  Mass density of this phase.

  Condition: {.} > 0 kg/m3

PIMPLE pressure-velocity coupling controls from system/fvSolution.

• outer_correctorsvalue · int32

  Number of outer PIMPLE iterations per time step.

  Condition: {.} >= 1
• correctorsvalue · int32

  Number of pressure corrections within each outer PIMPLE iteration.

  Condition: {.} >= 1
• non_orthogonal_correctorsvalue · int32

  Additional pressure corrections for non-orthogonal mesh faces.

  Condition: {.} >= 0

Pressure-implicit split controls from system/fvSolution.

• correctorsvalue · int32

  Number of pressure-velocity correction passes per time step.

  Condition: {.} >= 1
• non_orthogonal_correctorsvalue · int32

  Additional pressure corrections for non-orthogonal mesh faces.

  Condition: {.} >= 0

SIMPLE steady-state pressure-correction controls from system/fvSolution.

• non_orthogonal_correctorsvalue · int32

  Additional pressure corrections for non-orthogonal mesh faces.

  Condition: {.} >= 0

• correctorsvalue · int32

  Number of correction iterations in the stress-analysis solver.

  Condition: {.} >= 1

• surface_tensionvalue · float64 · N/m

  Surface tension between the two modeled phases.

  Condition: {.} > 0 N/m

Viscous-stress divergence scheme used by selected fluid tutorials.

• viscous_stressvalue · str

  Divergence scheme for the viscous-stress contribution.