<div class="gmail_quote">On Thu, Nov 18, 2010 at 1:36 AM, Mubashir Ali <span dir="ltr"><<a href="mailto:mubashir@iitk.ac.in" target="_blank">mubashir@iitk.ac.in</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Hello All,<br>
<br>
I have a 3D lid driven cavity data in ensight format. I did laminar<br>
unsteady state simulation with a Finite volume code named Code Saturne.<br>
<br>
I wish to calculate divergence of velocity vector i.e. DEL U = 0<br>
<br>
Does anyone have an idea how to do it. Your suggestions would be surely of<br>
great help for me.<br>
<br>
Kind Regards<br>
<br>
Mubashir Ali<br></blockquote><div><br></div><div>In VTK there is a vtkImageDivergence filter:</div><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageDivergence" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageDivergence</a></div>
<div class="gmail_quote"><br></div><div class="gmail_quote"><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageDivergence" target="_blank"></a>It doesn't look like there is an interface to this in Paraview. You can write one - it is actually quite easy:</div>
<div class="gmail_quote"><meta http-equiv="content-type" content="text/html; charset=utf-8"><a href="http://www.paraview.org/Wiki/Plugin_HowTo#Adding_a_new_VTK_filter">http://www.paraview.org/Wiki/Plugin_HowTo#Adding_a_new_VTK_filter</a></div>
<div class="gmail_quote"><br><div>David </div></div>