<HTML><BODY><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">Hi, Neks!</span><br style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><br style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><span>I am working with a complex geometry which was built in gambit. I have a velocity fields for my grid. But I want to interpolate these velocity fields to a new grid. The old grid was changed without moving the geometry parameters, I just changed the position of the computational nodes and reduced their number (see pictures old_grid and new_grid *). During interpolation with gfldr:<br></span></span><p style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">...<br>call userchk<br>call gfldr wing0.f00001<br>WARNING: Unable to find all mesh points in source fld 39404<br>done :: gfldr 0.20E+03 sec<br>done :: userchk<br>...</p><p style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">After that, interpolation ends as usual. The velocity field is interpolated perfectly, but the pressure field is not interpolated correctly <span>(see pictures pressure_field_before_interpolation and <span>pressure_field_after_interpolation **</span>)</span>.<br>Tell me, what is my mistake? Is it possible to interpolate from a larger number of nodes to a smaller number of nodes?</p><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">*</span><a style="color: #0077cc; font-family: Arial, Tahoma, Verdana, sans-serif;" href="https://drive.google.com/open?id=1DmsGxc_WR3_aJW0UpLHkcxAVzt5BzABK" rel="noopener" target="_blank" data-snippet-id="9fa67a47-fd5d-7cb1-c545-83fdb4ee8609" data-mce-href="https://drive.google.com/open?id=1DmsGxc_WR3_aJW0UpLHkcxAVzt5BzABK" data-mce-style="color: #0077cc; font-family: Arial, Tahoma, Verdana, sans-serif;">https://drive.google.com/open?id=1DmsGxc_WR3_aJW0UpLHkcxAVzt5BzABK</a><br style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"> </span><a style="color: #0077cc; font-family: Arial, Tahoma, Verdana, sans-serif;" href="https://drive.google.com/open?id=1RbSsODF49DqGmyHnpz0Bktp-HDjW7j0w" rel=" noopener noreferrer" target="_blank" data-snippet-id="53c3ac47-3c08-409f-2a03-3acc6b7f2047" data-mce-href="https://drive.google.com/open?id=1RbSsODF49DqGmyHnpz0Bktp-HDjW7j0w" data-mce-style="color: #0077cc; font-family: Arial, Tahoma, Verdana, sans-serif;">https://drive.google.com/open?id=1RbSsODF49DqGmyHnpz0Bktp-HDjW7j0w</a><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"> </span><br style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">**</span><a style="color: #0077cc; font-family: Arial, Tahoma, Verdana, sans-serif;" href="https://drive.google.com/open?id=16Ueepa1lo_aHjya3BnLn8fHI3ek0kvo8" rel=" noopener noreferrer" target="_blank" data-snippet-id="72a690d1-5b0c-93b0-ae28-de7e69d8113c" data-mce-href="https://drive.google.com/open?id=16Ueepa1lo_aHjya3BnLn8fHI3ek0kvo8" data-mce-style="color: #0077cc; font-family: Arial, Tahoma, Verdana, sans-serif;">https://drive.google.com/open?id=16Ueepa1lo_aHjya3BnLn8fHI3ek0kvo8</a><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"> </span><br style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"> </span><a href="https://drive.google.com/open?id=1CNiN8MdE7tNeu8T4jBtZBtMSX5dlXzNM">https://drive.google.com/open?id=1CNiN8MdE7tNeu8T4jBtZBtMSX5dlXzNM</a><br><a href="https://drive.google.com/open?id=1CNiN8MdE7tNeu8T4jBtZBtMSX5dlXzNM"></a><br><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">Best regards,</span><br style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;"><span style="font-family: Arial, Tahoma, Verdana, sans-serif;" data-mce-style="font-family: Arial, Tahoma, Verdana, sans-serif;">Elizabeth</span><br></BODY></HTML>