Aeroelastic Simulation (Typical Section Model)

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.

FLUTTER_SPEED_INDEX

The flutter speed index (modifies the freestream condition)

More in config_template.cfg: The flutter speed index (modifies the freestream condition in the solver)

• Type: real number
• Default: 0.6
• In config_template.cfg: FLUTTER_SPEED_INDEX = 0.6
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (1.3)
• Code: CConfig.cpp line 2496

PLUNGE_NATURAL_FREQUENCY

Natural frequency of the spring in the plunging direction (rad/s).

• Type: real number
• Default: 100
• In config_template.cfg: PLUNGE_NATURAL_FREQUENCY = 100
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (100)
• Code: CConfig.cpp line 2498

PITCH_NATURAL_FREQUENCY

Natural frequency of the spring in the pitching direction (rad/s).

• Type: real number
• Default: 100
• In config_template.cfg: PITCH_NATURAL_FREQUENCY = 100
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (100)
• Code: CConfig.cpp line 2500

AIRFOIL_MASS_RATIO

The airfoil mass ratio.

• Type: real number
• Default: 60
• In config_template.cfg: AIRFOIL_MASS_RATIO = 60
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (60)
• Code: CConfig.cpp line 2502

CG_LOCATION

Distance in semichords by which the center of gravity lies behind the elastic axis.

• Type: real number
• Default: 1.8
• In config_template.cfg: CG_LOCATION = 1.8
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (1.8)
• Code: CConfig.cpp line 2504

RADIUS_GYRATION_SQUARED

The radius of gyration squared (expressed in semichords) of the typical section about the elastic axis.

• Type: real number
• Default: 3.48
• In config_template.cfg: RADIUS_GYRATION_SQUARED = 3.48
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (3.48)
• Code: CConfig.cpp line 2506

AEROELASTIC_ITER

Solve the aeroelastic equations every given number of internal iterations.

• Type: integer
• Default: 3
• In config_template.cfg: AEROELASTIC_ITER = 3
• Used in 1 test case file, for example: aeroelastic_NACA64A010.cfg (5)
• Code: CConfig.cpp line 2508

OPT_RELAX_FACTOR

Scale the line search in the optimizer

More in config_template.cfg: Factor to relax or accelerate the optimizer convergence (affects the line search in SU2_DEF) In general, surface deformations of 0.01’’ or 0.0001m are desirable

• Type: real number
• Default: 1.0
• In config_template.cfg: OPT_RELAX_FACTOR= 1E3
• Mentioned in: Setup Guide: Shape Optimization with the Discrete Adjoint, Constrained shape design of a transonic inviscid wing at a cte. C_L, Constrained shape design of a transonic turbulent airfoil at a cte. C_L, Unconstrained shape design of a transonic inviscid airfoil at a cte. AoA
• Used in 7 test case files, for example: def_intersect.cfg (1.0), Arina2KRS.cfg (1E3), naca0012.cfg (1)
• Code: CConfig.cpp line 2513

OPT_LINE_SEARCH_BOUND

Bound the line search in the optimizer

More in config_template.cfg: Optimization bound (bounds the line search in SU2_DEF)

• Type: real number
• Default: 1E6
• In config_template.cfg: OPT_LINE_SEARCH_BOUND= 1E6
• Mentioned in: Setup Guide: Shape Optimization with the Discrete Adjoint, Constrained shape design of a transonic turbulent airfoil at a cte. C_L
• Used in 3 test case files, for example: def_intersect.cfg (1E6)
• Code: CConfig.cpp line 2516