Format of OS files
According to the FEKO user manual, the os file ( surface current density) format is following:
Num X Y Z Re(Jx) Im(Jx) Re(Jy) Im(Jy) Re(Jz) Im(Jz) ...
... Abs(Jcorn1) Abs(Jcorn2) Abs(Jcorn3) ...
... Re(Jx_c1) Im(Jx_c1) Re(Jy_c1) Im(Jy_c1) Re(Jz_c1) Im(Jz_c1) ...
... Re(Jx_c2) Im(Jx_c2) Re(Jy_c2) Im(Jy_c2) Re(Jz_c2) Im(Jz_c2) ...
... Re(Jx_c3) Im(Jx_c3) Re(Jy_c3) Im(Jy_c3) Re(Jz_c3) Im(Jz_c3)
My question is what does c1,c2,c3 means ? The current at three corners of triangles? The X Y Z value seems to be the center of triangle( i checked with mesh file) .
if they corners of triangles , how to determine their coordinates. Does any one have a clue ?
Thanks.
Cris
Answers
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Dear Cris
Yes, c1, c2 and c3 refers to corner1, corner2 and corner3.
The locations of the corners can be written to the FEKO *.out file using the 'Export to the FEKO *.out file' option for Geometry under the General tab of the Solver settings in CADFEKO.
Your FEKO *.out file should then contain a section such as below:
DATA OF THE METALLIC TRIANGLES no. label x1 in m y1 in m z1 in m edges medium x2 in m y2 in m z2 in m medium x3 in m y3 in m z3 in m nx ny nz area in m*m 1 Cuboid 1.0000E+00 0.0000E+00 1.0000E+00 1 2 3 Free s 9.2172E-01 7.3931E-02 1.0000E+00 Free s 9.1669E-01 0.0000E+00 1.0000E+00 0.0000E+00 0.0000E+00 1.0000E+00 3.0797E-03 2 Cuboid 1.0000E+00 8.3374E-02 1.0000E+00 -1 4 5 Free s 9.2172E-01 7.3931E-02 1.0000E+00 Free s 1.0000E+00 0.0000E+00 1.0000E+00
In the above corner1 is given by (x1,y1,z1), corner2 by (x2,y2,z2) etc.
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Altair Forum User said:
Dear John,
Thanks. By looking at the out file, i can find the corrdinates for each corner of a triangle, However, something is strange when it comes to the OS file.
As you can see from the out file, the second corner of trinagle 1 is also the second corner of triangle 2, but in the OS file , the electric current density at corner 2 of triangle1 and 2 are different. This doesn't make sense to me, they are at the same position, so their current density should be the same.
DATA OF THE METALLIC TRIANGLESno. label x1 in m y1 in m z1 in m edges
medium x2 in m y2 in m z2 in m
medium x3 in m y3 in m z3 in m
nx ny nz area in m*m
1 Union1 0.0000E+00 1.3900E-01 0.0000E+00 1 2
0 1.9586E-03 1.3710E-01 0.0000E+00
0 2.8494E-03 1.3900E-01 0.0000E+00
0.0000E+00 0.0000E+00 1.0000E+00 2.7097E-06
2 Union1 0.0000E+00 1.3601E-01 0.0000E+00 -1 3
0 1.9586E-03 1.3710E-01 0.0000E+00
0 0.0000E+00 1.3900E-01 0.0000E+00
0.0000E+00 0.0000E+00 1.0000E+00 2.9245E-06
3 Union1 2.5267E-02 1.3900E-01 0.0000E+00 4#Characteristic Mode Index: 1
#No. of Header Lines: 1
# 'Num' 'X' 'Y' 'Z' 'Re(Jx)' 'Im(Jx)' 'Re(Jy)' 'Im(Jy)' 'Re(Jz)' 'Im(Jz)' 'Abs(Jcorn1)' 'Abs(Jcorn2)' 'Abs(Jcorn3)' 'Re(Jx_c1)' 'Im(Jx_c1)' 'Re(Jy_c1)' 'Im(Jy_c1)' 'Re(Jz_c1)' 'Im(Jz_c1)' 'Re(Jx_c2)' 'Im(Jx_c2)' 'Re(Jy_c2)' 'Im(Jy_c2)' 'Re(Jz_c2)' 'Im(Jz_c2)' 'Re(Jx_c3)' 'Im(Jx_c3)' 'Re(Jy_c3)' 'Im(Jy_c3)' 'Re(Jz_c3)' 'Im(Jz_c3)'
1 1.60267301E-03 1.38366026E-01 0.00000000E+00 -6.00105204E-01 0.00000000E+00 -1.46378183E-01 0.00000000E+00 0.00000000E+00 0.00000000E+00 9.70146150E-01 6.79031533E-01 3.12246041E-01 -9.70146150E-01 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 -5.17923422E-01 0.00000000E+00 -4.39134548E-01 0.00000000E+00 0.00000000E+00 0.00000000E+00 -3.12246041E-01 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
2 6.52869335E-04 1.37370583E-01 0.00000000E+00 1.47271182E-01 0.00000000E+00 -1.30962443E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 1.61571009E+00 1.44052091E+00 9.42068288E-01 0.00000000E+00 0.00000000E+00 -1.61571009E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 4.41813547E-01 0.00000000E+00 -1.37109492E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 -9.42068288E-01 0.00000000E+00 0.00000000E+00 0.00000000E+000
Altair Employee