One way is to use the calculator filter to multiply the pressure by the normal to get force per unit area on the cylinder. Then you can use the integrate variables filter to get the total force on it. <br><br>If you don't have normals on your cylinder, you can use the generate surface normals filter but that only works for polydata. The extract surface should get you from any other data set to the polydata you want.<br>
<br>Andy<br><br><div class="gmail_quote">On Sun, Jun 19, 2011 at 4:01 AM, Stephen Wornom <span dir="ltr"><<a href="mailto:stephen.wornom@inria.fr">stephen.wornom@inria.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div style="font-family:Times New Roman;font-size:12pt;color:#000000">How does one compute the integral of P Normal ds ?<br>where Normal is the surface normal vector<br><br>click on integrate variables computes the integral of P ds<br>
I would like<br>Fx = integral of P nx ds<br>where nx ds is the surface area normal to the x-direction.<br>Hope my question is clear.<br><font color="#888888">Stephen<br></font>p.s.<br>The surface in question is a cylinder<br>
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