FEM flow solver definition

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.

RIEMANN_SOLVER_FEM

Riemann solver used for DG (ROE, LAX-FRIEDRICH, AUSM, HLLC, VAN_LEER)

• Type: one of the values below
• Values: NONE, ROE, TURKEL_PREC, AUSM, AUSMPLUSUP, AUSMPLUSUP2, AUSMPLUSM, SLAU, HLLC, SW, MSW, SCALAR_UPWIND, BOUNDED_SCALAR, CONVECTIVE_TEMPLATE, L2ROE, LMROE, SLAU2, FDS, LAX-FRIEDRICH, UDS
• Default: ROE
• In config_template.cfg: RIEMANN_SOLVER_FEM= ROE
• Used in 35 test case files, for example: InviscidVortex.cfg (ROE)
• Code: CConfig.cpp line 2645

QUADRATURE_FACTOR_STRAIGHT_FEM

Constant factor applied for quadrature with straight elements (2.0 by default)

• Type: real number
• Default: 2.0
• In config_template.cfg: QUADRATURE_FACTOR_STRAIGHT_FEM = 2.0
• Used in 35 test case files, for example: InviscidVortex.cfg (2.0), fem_NACA0012.cfg (3.0)
• Code: CConfig.cpp line 2647

QUADRATURE_FACTOR_CURVED_FEM

Constant factor applied for quadrature with curved elements (3.0 by default)

• Type: real number
• Default: 3.0
• In config_template.cfg: QUADRATURE_FACTOR_CURVED_FEM = 3.0
• Used in 35 test case files, for example: InviscidVortex.cfg (2.0), fem_NACA0012.cfg (3.0)
• Code: CConfig.cpp line 2649

QUADRATURE_FACTOR_TIME_ADER_DG

Factor applied during quadrature in time for ADER-DG. (2.0 by default)

• Type: real number
• Default: 2.0
• In config_template.cfg: %QUADRATURE_FACTOR_TIME_ADER_DG = 2.0
• Used in 2 test case files, for example: fem_Sphere_reg_ADER.cfg (2.0)
• Code: CConfig.cpp line 2651

THETA_INTERIOR_PENALTY_DG_FEM

Factor for the symmetrizing terms in the DG FEM discretization (1.0 by default)

• Type: real number
• Default: 1.0
• In config_template.cfg: THETA_INTERIOR_PENALTY_DG_FEM = 1.0
• Used in 3 test case files, for example: lam_flatplate_reg.cfg (1.0)
• Code: CConfig.cpp line 2653

COMPUTE_ENTROPY_FLUID_MODEL

Compute the entropy in the fluid model (YES, NO)

• Type: YES / NO
• Default: YES
• In config_template.cfg: COMPUTE_ENTROPY_FLUID_MODEL= YES
• Used in 2 test case files, for example: lam_mms_dg_3d.cfg (NO), ringleb_dg.cfg (YES)
• Code: CConfig.cpp line 2655

USE_LUMPED_MASSMATRIX_DGFEM

Use the lumped mass matrix for steady DGFEM computations

More in config_template.cfg: Use the lumped mass matrix for steady DGFEM computations (NO, YES)

• Type: YES / NO
• Default: NO
• In config_template.cfg: USE_LUMPED_MASSMATRIX_DGFEM= NO
• Used in 6 test case files, for example: fem_NACA0012_reg.cfg (YES)
• Code: CConfig.cpp line 2657

JACOBIAN_SPATIAL_DISCRETIZATION_ONLY

Only compute the exact Jacobian of the spatial discretization (NO, YES)

• Type: YES / NO
• Default: NO
• In config_template.cfg: JACOBIAN_SPATIAL_DISCRETIZATION_ONLY= NO
• Code: CConfig.cpp line 2659

ALIGNED_BYTES_MATMUL

Number of aligned bytes for the matrix multiplications. Multiple of 64. (128 by default)

• Type: integer
• Default: 128
• In config_template.cfg: ALIGNED_BYTES_MATMUL= 128
• Code: CConfig.cpp line 2662