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boundary data export (postcoord)
Posted 6 gen 2010, 06:02 GMT-5 0 Replies
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I have a 3D geometry ( a cylinder of radius 1 and height 0.1, top, bottom and sides together making 6 boundaries faces) for heat transfer problem. I want to read the boundary coordinates of the top face (index 4) of my model after exporting it into matlab (ctrl +F).
In the matlab command line, I am using postcoord to read the coordinate over a 100 grid points.
coord = postcoord(fem,'edim',1,'grid',100,'dl',[4]); This command indeed generates <3x100> array of (x,y,z) coordinates as expected. Since I am only reading the top face, the value z (z=0.1, equal to the height of the cylinder) is constant through out. To reproduce the top face of the geometry, I would expect the values of x
and y varying from -1 to 1. For some strange reasons does not happen. I get -1<x<-0.5402 and 0<y<-0.8415. This does not change however, if I change the number of grid points.
Just to be sure, I tried couple of 1D and 2D cases for which the command postcoord works as expected. I am not sure what is happening in 3D case. Could anyone please shed some light on it.
With regards,
Ravinder
PS: The test file of the model is attached with this messahe
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Hello Ravinder Banyal
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