TrioCFD 1.9.8
TrioCFD documentation
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Keywords derived from discretisation_base

discretisation_base

Basic class for space discretization of thermohydraulic turbulent problems.

Usable keywords (pick one): coloc, dg, ef, ef_axi, ijk, polymac, polymac_p0p1nc, polymac_p0, vdf, vefprep1b

Parameters:


coloc

Co-localised cell-center discretization

Parameters:


dg

DG discretization

Parameters:


ef

Element Finite discretization.

Parameters:


ef_axi

Element Finite discretization.

Parameters:


ijk

IJK discretization.

Parameters:


polymac_cdo

Synonyms: polymac

PolyMAC_CDO discretization (PolyMAC_CDO discretization that is not compatible with pb_multi).

Parameters:


polymac_hfv

Synonyms: polymac_p0p1nc

PolyMAC_HFV discretization (previously PolyMAC_CDO discretization compatible with pb_multi).

Parameters:


polymac_mpfa

Synonyms: polymac_p0

PolyMAC_MPFA discretization (previously covimac discretization compatible with pb_multi).

Parameters:


vdf

Finite difference volume discretization.

Parameters:


vef

Synonyms: vefprep1b

Finite element volume discretization (P1NC/P1-bubble element). Since the 1.5.5 version, several new discretizations are available thanks to the optional keyword Read. By default, the VEFPreP1B keyword is equivalent to the former VEFPreP1B formulation (v1.5.4 and sooner). P0P1 (if used with the strong formulation for imposed pressure boundary) is equivalent to VEFPreP1B but the convergence is slower. VEFPreP1B dis is equivalent to VEFPreP1B dis Read dis { P0 P1 Changement_de_base_P1Bulle 1 Cl_pression_sommet_faible 0 }

Parameters:

  • [changement_de_base_p1bulle] (type: int into [0, 1]) changement_de_base_p1bulle 1 This option may be used to have the P1NC/P0P1 formulation (value set to 0) or the P1NC/P1Bulle formulation (value set to 1, the default).
  • [p0] (type: flag) Pressure nodes are added on element centres
  • [p1] (type: flag) Pressure nodes are added on vertices
  • [pa] (type: flag) Only available in 3D, pressure nodes are added on bones
  • [rt] (type: flag) For P1NCP1B (in TrioCFD)
  • [modif_div_face_dirichlet] (type: int into [0, 1]) This option (by default 0) is used to extend control volumes for the momentum equation.
  • [cl_pression_sommet_faible] (type: int into [0, 1]) This option is used to specify a strong formulation (value set to 0, the default) or a weak formulation (value set to 1) for an imposed pressure boundary condition. The first formulation converges quicker and is stable in general cases. The second formulation should be used if there are several outlet boundaries with Neumann condition (see Ecoulement_Neumann test case for example).
  • Inherited from discretisation_base:
  • [reorder] (type: reorder_mesh) Reordering directive.