Convergence

Generated from SU2 commit 6b54b78464 on 2026-10-23. Do not edit this page. Edit the comment above the option in Common/src/CConfig.cpp instead.

CONV_FIELD

Output field to monitor

More in config_template.cfg: Convergence field

• Type: list of strings
• Default: depends on solver
• In config_template.cfg: CONV_FIELD= DRAG
• Mentioned in: Guide to Version v7, Setup Guide: Heat Transfer and Conjugate Heat Transfer, Setup Guide: Incompressible Flows, Setup Guide: Laminar-Turbulent Transition, Setup Guide: Species Transport and Combustion, Setup Guide: Steady RANS for External Aerodynamics and 10 more
• Used in 81 test case files, for example: aeroelastic_NACA64A010.cfg (REL_RMS_DENSITY, REL_RMS_ENERGY), config.cfg (MOMENT_X), def_intersect.cfg ((RMS_PRESSURE, RMS_ADJ_PRESSURE))
• Code: CConfig.cpp line 2058

CONV_RESIDUAL_MINVAL

Min value of the residual (log10 of the residual)

• Type: real number
• Default: -14.0
• In config_template.cfg: CONV_RESIDUAL_MINVAL= -8
• Mentioned in: Guide to Version v7, Setup Guide: Heat Transfer and Conjugate Heat Transfer, Setup Guide: Incompressible Flows, Setup Guide: Laminar-Turbulent Transition, Setup Guide: Non-Ideal Compressible Flows, Setup Guide: Shape Optimization with the Discrete Adjoint and 10 more
• Used in 381 test case files, for example: aeroelastic_NACA64A010.cfg (-3), air_nozzle_restart.cfg (-12), backwardStep.cfg (-15)
• Code: CConfig.cpp line 2060

CONV_STARTITER

Iteration number to begin convergence monitoring

More in config_template.cfg: Start convergence criteria at iteration number

• Type: integer
• Default: 5
• In config_template.cfg: CONV_STARTITER= 10
• Mentioned in: Setup Guide: Incompressible Flows, Setup Guide: Laminar-Turbulent Transition, Setup Guide: Non-Ideal Compressible Flows, Setup Guide: Shape Optimization with the Discrete Adjoint, Setup Guide: Species Transport and Combustion, Setup Guide: Steady RANS for External Aerodynamics and 6 more
• Used in 359 test case files, for example: aeroelastic_NACA64A010.cfg (0), air_nozzle_restart.cfg (10), inv_ONERAM6.cfg (25)
• Code: CConfig.cpp line 2062

CONV_CAUCHY_ELEMS

Number of elements to apply the criteria. DEFAULT 100

• Type: integer
• Default: 100
• In config_template.cfg: CONV_CAUCHY_ELEMS= 100
• Mentioned in: Guide to Version v7, Setup Guide: Incompressible Flows, Setup Guide: Steady RANS for External Aerodynamics, Setup Guide: Turbomachinery, Setup Guide: Unsteady Flows and DES, Solver Setup and 2 more
• Used in 281 test case files, for example: backwardStep.cfg (100), def_intersect.cfg (20), naca0012.cfg (10)
• Code: CConfig.cpp line 2064

CONV_CAUCHY_EPS

Epsilon to control the series convergence

• Type: real number
• Default: 1E-10
• In config_template.cfg: CONV_CAUCHY_EPS= 1E-10
• Mentioned in: Guide to Version v7, Setup Guide: Incompressible Flows, Setup Guide: Steady RANS for External Aerodynamics, Setup Guide: Turbomachinery, Setup Guide: Unsteady Flows and DES, Solver Setup and 2 more
• Used in 279 test case files, for example: backwardStep.cfg (1E-6), inv_ONERAM6.cfg (1E-10), turb_ONERAM6.cfg (1E-5)
• Code: CConfig.cpp line 2066

CONV_WINDOW_STARTITER

Iteration number after START_ITER_WND to begin convergence monitoring

More in config_template.cfg: Time Convergence Monitoring starts at Iteration WINDOW_START_ITER + CONV_WINDOW_STARTITER

• Type: integer
• Default: 15
• In config_template.cfg: CONV_WINDOW_STARTITER = 0
• Mentioned in: Setup Guide: Unsteady Flows and DES, Solver Setup, Unsteady NACA0012
• Used in 2 test case files, for example: cylinder_Windowing.cfg (0)
• Code: CConfig.cpp line 2069

CONV_WINDOW_CAUCHY_EPS

Epsilon to control the series convergence

• Type: real number
• Default: 1E-3
• In config_template.cfg: CONV_WINDOW_CAUCHY_EPS = 1E-3
• Mentioned in: Setup Guide: Unsteady Flows and DES, Solver Setup, Unsteady NACA0012
• Used in 2 test case files, for example: cylinder_Windowing.cfg (1)
• Code: CConfig.cpp line 2071

CONV_WINDOW_CAUCHY_ELEMS

Number of elements to apply the criteria. DEFAULT 100

• Type: integer
• Default: 100
• In config_template.cfg: CONV_WINDOW_CAUCHY_ELEMS = 10
• Mentioned in: Setup Guide: Unsteady Flows and DES, Solver Setup, Unsteady NACA0012
• Used in 2 test case files, for example: cylinder_Windowing.cfg (2)
• Code: CConfig.cpp line 2073

WINDOW_CAUCHY_CRIT

Determines, if the cauchy convergence criterion should be used for windowed time averaged objective functions

More in config_template.cfg: Time convergence monitoring

• Type: YES / NO
• Default: NO
• In config_template.cfg: WINDOW_CAUCHY_CRIT = YES
• Mentioned in: Setup Guide: Unsteady Flows and DES, Solver Setup, Unsteady NACA0012
• Used in 2 test case files, for example: cylinder_Windowing.cfg (YES)
• Code: CConfig.cpp line 2075

CONV_WINDOW_FIELD

• Output fields for the Cauchy criterium for the TIME iteration. The criterium is applied to the windowed time average of the chosen funcion.

More in config_template.cfg: List of time convergence fields

• Type: list of strings
• In config_template.cfg: CONV_WINDOW_FIELD = (TAVG_DRAG, TAVG_LIFT)
• Mentioned in: Setup Guide: Unsteady Flows and DES, Solver Setup, Unsteady NACA0012
• Used in 2 test case files, for example: cylinder_Windowing.cfg ((TAVG_DRAG, TAVG_LIFT)), cylinder_Windowing_AD.cfg (TAVG_DRAG)
• Code: CConfig.cpp line 2078