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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Besides the question below, is the filter “point interpolation” is used for more advanced interpolation scheme? Can I use this filter to obtain more accurate interpolation result? Anyone who could explain this filter to me? I just couldn’t find any tutorial on this filter.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Many thanks,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Wilson<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> HongchaoWang [mailto:hongchao.wang2013@gmail.com] <br><b>Sent:</b> Friday, 18 August 2017 11:37 AM<br><b>To:</b> 'paraview@paraview.org' <paraview@paraview.org><br><b>Subject:</b> Interpolation error in paraview<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I’m just wondering what interpolation scheme is used for data manipulation in Paraview?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I’m using Paraview 5.2.0. I want to measure the velocity very close to a wall surface so that I can obtain the wall shear stress. However, I found the velocity measured using Paraview is different from the results I have obtained using the postprocessing tool in OpenFoam. Compared with the analytical solution which is already known in my case, Paraview result is worse and is 10% smaller than the analytical solution while the OpenFoam result agrees with the analytical solution very well. With finer mesh, the difference between the Paraview and OpenFoam results becomes smaller, so I believe the difference is due to the interpolation error.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Anyone who has experience on this problem? Is there any advanced interpolation scheme that I can use in Paraview?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Many thanks,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Wilson <o:p></o:p></span></p></div></body></html>