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|
mesh_info =
(
## Read mesh from file.
element from_file {
(
## Triangle mesh format.
##
## Enter the base name without the .edge .ele, .face or
## .node extensions, and without process numbers.
element format {
attribute name { "triangle" },
comment
}|
## Read the mesh from a vtu. Note that the mesh will have no
## surface or region IDs.
element format {
attribute name { "vtu" },
comment
}|
## GMSH mesh format
element format {
attribute name { "gmsh" },
comment
}
),
attribute file_name { xsd:string },
element dimension {
integer
}?,
from_file_mesh_stat_options,
comment
}|
## Make mesh from existing mesh.
element from_mesh {
mesh_choice,
element mesh_shape {
element polynomial_degree {
integer
}?,
element element_type {
## Select the element type. "lagrangian" means the usual
## Pn element type. "bubble" adds bubble functions that
## vanish on the element boundaries, and
## trace defines an element that is only defined on faces
## and is undefined on the element interior (used for
## enforcing continuity by Lagrange multipliers).
element string_value{
"lagrangian" | "bubble" | "trace"
}
}?
}?,
element mesh_continuity {
element string_value{
"continuous" | "discontinuous"
}
}?,
element constraint_type {
## Set the constraint type. This is used to implement
## div-conforming elements such as RT0 in a hybridised
## solver.
element string_value{
"BDM" | "BDFM" | "RT"
},
element solver {
## Solver is used to apply projections to div-conforming
## space, and in elliptic solvers
linear_solver_options_sym
}
}?,
## Make mesh periodic
element periodic_boundary_conditions {
attribute name { xsd:string },
## List of boundary ids that are aliased to
element physical_boundary_ids {
integer_vector
},
## List of boundary ids that are aliased
element aliased_boundary_ids {
integer_vector
},
## Python code which takes coordinate of an aliased
## boundary node and returns the coordinate of a physical
## boundary node.
## Note that in adaptive simulations this will be applied to
## arbitrary points in space, not just those on the original aliased
## boundary.
element coordinate_map {
python_code
},
## Python code which takes coordinate of a physical
## boundary node and returns the coordinate of an aliased
## boundary node. This is used in adaptive simulations to
## keep the adapted domain inside the bounding box of the
## original domain.
element inverse_coordinate_map {
python_code
}?,
## <b>Don't turn this on by hand!</b>
## This option gets set by the periodise tool, to indicate
## that this mesh should have the periodic boundary conditions
## <b>removed</b>. See the discussion on the wiki about
## parallel periodic boundary conditions.
element remove_periodicity {
empty
}?
}*,
## Extrude a horizontal (1D or 2D) mesh in the vertical
element extrude {
(
## Extrusion options for WholeMesh
##
## Only specify one set of parameters if not using mesh regions.
## Otherwise select other regions option, specify region_ids
## and distinct names. Then add extra regions for other regions.
element regions {
attribute name { "WholeMesh" },
extrusion_options
}|
## Multiple extrusion options are allowed if specifying
## different values in different
## regions of the mesh (defined by region_ids). In this case
## each set of options
## requires a distinct name for the options dictionary.
element regions {
attribute name { string },
region_ids?,
extrusion_options
}
)+,
## This is an internal option used by checkpointing. The
## option is switched on automatically in writing a
## checkpoint, so that when starting from the checkpoint .flml
## fluidity picks up the extruded mesh from file. After the next
## adapt the extrusion is again done as specified in the other
## extrusion options and under the adaptivity options.
element checkpoint_from_file {
(
## Triangle mesh format.
##
## Enter the base name without the .edge .ele, .face or
## .node extensions, and without process numbers.
element format {
attribute name { "triangle" },
comment
}|
## GMSH mesh format
element format {
attribute name { "gmsh" },
comment
}
),
attribute file_name { xsd:string },
comment
}?
}?,
derived_mesh_stat_options,
comment
}
)
# Options for inclusion/exclusion of mesh statistics from the .stat file
include_mesh_in_stat =
(
## Include this mesh in the .stat file
element include_in_stat {
comment
}
)
exclude_mesh_from_stat =
(
## Exclude this mesh from the .stat file
element exclude_from_stat {
comment
}
)
# Diagnostic statistics options for meshed, with enabled by default
mesh_stat_options_enabled_default =
(
include_mesh_in_stat|
exclude_mesh_from_stat
)
# Diagnostic statistics options for meshed, with disabled by default
mesh_stat_options_disabled_default =
(
exclude_mesh_from_stat|
include_mesh_in_stat
)
from_file_mesh_stat_options =
(
## Specify what is added to .stat files
element stat {
mesh_stat_options_enabled_default
}
)
derived_mesh_stat_options =
(
## Specify what is added to .stat files
element stat {
mesh_stat_options_disabled_default
}
)
extrusion_options =
(
## Depth over which to extrude
## top will be at z=0
## bottom will be at z=-bottom_depth
element bottom_depth {
input_choice_real_plus_map
},
## Constant or function to specify the depth of the
## layers. The function is a function of all coordinates
## (so in 2+1D: x,y and z) to specify a layer depth that
## varies both in the horizontal as in the vertical.
element sizing_function {
input_choice_real_plus_list,
## If your sizing function only varies in z enable this options.
## Do not use if your function depends on x and/or y as it takes a column of z values and re-uses it.
element varies_only_in_z {empty}?
},
## To prevent infinitesimally thin bottom layer if sizing function
## is an integer multiple of total depth, the bottom layer needs
## to have at least this fraction of the layer depth above it.
##
## Default is 1e-3.
element minimum_bottom_layer_fraction {
real
}?,
## surface_id to assign to the top of the extruded mesh
element top_surface_id {
integer
}?,
## surface_id to assign to the bottom of the extruded mesh
element bottom_surface_id {
integer
}?
)
# Most common mesh choices
mesh_choice =
(
element mesh {
attribute name { xsd:string }
}|
element mesh {
attribute name { "CoordinateMesh" }
}|
element mesh {
attribute name { "VelocityMesh" }
}|
element mesh {
attribute name { "PressureMesh" }
}
)
# Same choices, but with VelocityMesh offered first
velocity_mesh_choice =
(
element mesh {
attribute name { "VelocityMesh" }
}|
element mesh {
attribute name { "PressureMesh" }
}|
element mesh {
attribute name { "CoordinateMesh" }
}|
element mesh {
attribute name { string }
}
)
# Same choices, but with PressureMesh offered first
pressure_mesh_choice =
(
element mesh {
attribute name { "PressureMesh" }
}|
element mesh {
attribute name { "VelocityMesh" }
}|
element mesh {
attribute name { "CoordinateMesh" }
}|
element mesh {
attribute name { string }
}
)
# Same choices, but with CoordinateMesh offered first
coordinate_mesh_choice =
(
element mesh {
attribute name { "CoordinateMesh" }
}|
element mesh {
attribute name { "VelocityMesh" }
}|
element mesh {
attribute name { "PressureMesh" }
}|
element mesh {
attribute name { string }
}
)
|