Hi Paraviewers,<br><br>I would like to do a mesh refinement analysis using the predefined filters of paraview (I can already do such an analysis with numpy and pylab).<br>My objective is to calculate the difference between the pressure fields of a fine grid simulation and a coarse grid simulation.<br>
<br>I have two OpenFoam simulations: A fine grid simulation and a coarse grid simulation (attached tarball).<br>I have imported the results of both simulations into paraview.<br>Then I have resampled the fine grid solution as follows:<br>
Select fine grid source >Resample with dataset > Source>Coarse grid<br>Then I apply a calculator on the resampled solution and basically rename the point pressure variable to 'presampled'<br>I also apply a calculator on the coarse solution and rename the point pressure variable to 'pcoarse'<br>
<br>The next step should be:<br>Select both calculators and apply the 'Append attributes' filter.<br>However, this filter is not selectable at this stage (grayed out)<br>I can confirm that both calculators have the same number of points and cells.<br>
<br>Can anyone tell me what I am doing wrong or whether there is a better way of performing a grid sensitivity study in paraview?<br><br>Thank you,<br>George<br>