usage_postprocessing.html

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<h1>Post-processing</h1>

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<h3>Nektar++ based post-processing</h3>
<p>The current distribution of the code has a specific Nektar++
output format. The solvers write the solution to <em>.fld </em> files in
the Nektar++ output format.</p>
<h3>External packages</h3>
<p>To convert this output to other formats we have provided a number of
utilities in the <em>Nektar++/utilities/PostProcessing</em> directory.</p>
<ul>
    <li><b>FldToVtk - VTK format</b><br/> <a
        href="http://www.vtk.org/" target="_blank">VTK</a>
    is an open format which is readable by almost any visualisation
    software. It is available in two formats: legacy and XML. The Nektar++ 
    library supports the newer XML ASCII format.<br/>
    </li>
    
	<li><b>FldToGmsh - Gmsh format</b><br/> <a
		href="http://www.geuz.org/gmsh/" target="_blank">Gmsh</a> is an
	automatic three-dimensional finite element mesh generator with built-in
	pre- and post-processing facilities. Its design goal is to provide a
	simple meshing tool for academic problems with parametric input and
	advanced visualization capabilities.<br/> As it has the capability
	of visualising high-order data, it is particularly useful in
	combination with the spectral/hp element method and Nektar++.<br/>
	Gmsh is distributed freely under the terms of the GNU General Public
	License and pre-compiled binaries for Windows, Linux and Mac OS X are
	available from its website.<br/>
	</li>

	<li><b>FldToTecplot - Tecplot format</b><br/> <a
		href="http://www.tecplot.com/" target="_blank">Tecplot</a> is a
	Computational Fluid Dynamics (CFD) and numerical simulation software
	package frequently used in post-processing simulation results. However
	as opposed to Gmsh, it is not distributed freely. 
	</li>


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