bamg (1rheolef)

  bamg options -g input[.bamgcad] -o ouput[.bamg]

  bamg -g toto.bamgcad -o toto.bamg

This software can

create

a mesh from a geometry

adapt

a mesh from a background mesh using a metric or solution file

do smoothing

to make quadrilaterals and to split internal edge with 2 boundary vertices in an existing mesh (in this case the metric is use to change the definition of the element's quality).

construct

just a metric file, if you have an other mesher

do the P1 interpolation

of the solution on another mesh:

input

file with -g filename (file type DB mesh).

output

file arguments -oxxxx filename where xxxx is the type of output file (see below for more details).

smoothing, quad, utility and other parameters.

In addition, metric specication may be prescribed with the help of -M filename argument (file type Metric). All the options are described below.

input

files -b filename where the suffixe of the file define the type of the file `.amdba', `.am_fmt', `.am', `.ftq', `.nopo' and otherwise the file is a BD mesh file.

input

`-M filename' (file type Metric) or -MBB filename or -Mbb filename (solution file type BB or bb).

metric

control parameters, -err val, -errg val,....

output

file arguments reqired

interpolation, smoothing, quad,

utility parameter, and other parameter do smoothing, to make quadrilaterals: and to split internal edge with 2 boundary vertices in an existing mesh (in this case the metric is use to change the definition of the element's quality).

input

files -r filename(file type DB mesh).

-M filename

(file type Metric).

output

file -o filename (file type DB mesh).

-thetaquad val:

to create quad with 2 triangles

-2:

to create the submesh with mesh size h = h/2

-2q:

to split all triangles in 3 quad. and to split all quad. in 4 quad.

-NbSmooth ival:

to change the number of smoothing iteration (3 by default if the metric eld is set with arguments : -M or -Mbb, 0 otherwise.

...

e.g. if you have an other mesher:

input

files -r filename (file type DB mesh).

--Mbb filename

or -MBB filename

+ all the arguments

of the metric construction

output

file -oM filename (file type Metric). do the P1 interpolation of the solution on another mesh:

input

files -r filename (file type DB mesh).

--rBB filename

or -rbb filename

output

file -wBB filename or -wbb filename

These options are relevant when computing a metric from a scalar field provided in a .bb file. Notice that, when providing a tensor metric in the .bb file, the metric computation is not performed and these options are not relevent.

-RelError

compute the metric with a relative error. This is the default.

-CutOff float

the cut-off value used for the relative error criteria. Default value is 1e-5.

-AbsError

compute the metric with a relative error