FieldConvert expects at least one input specification (such as a session file and its corresponding field file) and one output specification. These are specified on the command line as
These can be combined with a processing module by adding the
-m command line option.
There can be more than one module specified, and they can appear anywhere in the command
line arguments, although the order of execution is inferred from their order in the command
line. For example, the command
in2.fld to be read, followed by the
module1 processing module, the
module2 processing module, and finally output to the
out.dat Tecplot file.
FieldConvert supports XML and FLD-format files as produced by Nektar++. It also supports the reading of data files from two external spectral element codes: Semtex2 and Nek50003 . These files can be directly converted to Nektar++ format files by using the command
Note that even though the
.fld extension is typically associated with Nektar++ files,
FieldConvert can automatically identify Semtex and Nek5000 input field files.
To use these files in a simulation, or to post-process the results of a simulation, an appropriate
mesh must also be defined in the Nektar++ XML format.
NekMesh can be used to convert
these input files to XML, as outlined in section 4.