Integration in a custom coordinate system.
Posted Oct 17, 2020, 12:00 PM EDT 2 Replies
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I have a pipe geometry aligned with the z axis shifted in x and y. I want to calculate the men fluid temperature through the pipe. I use the integration operator with the spatial at expression (through a variable). The syntaxis i try is like: integrate(integrate(comp1.at3(sys2.r,sys2.phi,sys2.a,Tw),sys2.r,0,ra),sys2.phi,-pi,pi). The frame of the sys2 cylindrical coordinate system is spatial. The axis directions are checked and are correct. I can integrate if the pipe is made as an axisymmetric study but is the study is a 3D component, the integral fails. If i build a square geometry and evaluate it in the same way - using the integral syntax, i get the right result (using the default coordinate system).
It must be something of the coordinate system interpretation.