# Surface weighted average

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 September 22, 2010, 09:23 Surface weighted average #1 Senior Member   Francois Beaubert Join Date: Mar 2009 Location: Lille, France Posts: 133 Rep Power: 8 Hi all, Is there an utility with openFOAM or Paraview to compute the surface weighted average of a quantity such as temperature: p, li { white-space: pre-wrap; } $T_{mean}=\frac{\int_{A}T\vec{u}.d\vec{A}}{\int_{A }\vec{u}.d\vec{A}}$ where $A$ is the surface area ( a plane here) and $\vec{u}$ the velocity field. Any help could be useful. Thanks !

 September 23, 2010, 11:22 #2 Senior Member   Francois Beaubert Join Date: Mar 2009 Location: Lille, France Posts: 133 Rep Power: 8 I've found something that could be used on patches: http://openfoamwiki.net/index.php/Co...unctionObjects but I have to calculate those values on arbitrary locations. Any ideas ? Thanks

 May 16, 2012, 08:38 #3 Member   Sebastian Saegeler Join Date: Nov 2009 Location: Munich Posts: 70 Rep Power: 7 Hi Francois, did you find a solution for that? I'm interested in something similar. Sebastian

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