3. Modeling A#
3.1. Characteristics of modeling#
3D (HEXA27)
3.2. Characteristics of the mesh#
Number of knots: |
153 |
Number of meshes and types: |
8 HEXA27 (and 32 QUAD9) |
3.3. Tested sizes and results#
Identification |
Reference |
Aster |
Relative difference (%) |
Absolute deviation (°C) |
|||
difference |
tolerance |
difference |
tolerance |
||||
Temperature \((°C)\) |
|||||||
At the end of the bar |
|||||||
\(Y=L\) |
20.329 |
||||||
B |
N97 ROAD |
20.329 |
20.295 |
0.166 |
1% |
0.0338 |
0.5 |
BF medium |
N99 ROAD |
20.329 |
20.327 |
0.010 |
1% |
0.0021 |
0.5 |
F |
N98 ROAD |
20.329 |
20.295 |
0.166 |
1% |
0.0338 |
0.5 |
FG medium |
N101 ROAD |
20.329 |
20.327 |
0.010 |
1% |
0.0021 |
0.5 |
G |
N103 ROAD |
20.329 |
20.295 |
0.166 |
1% |
0.0338 |
0.5 |
GC environment |
N104 ROAD |
20.329 |
20.327 |
0.010 |
1% |
0.0021 |
0.5 |
C |
N102 ROAD |
20.329 |
20.295 |
0.166 |
1% |
0.0338 |
0.5 |
CB medium |
N100 ROAD |
20.329 |
20.327 |
0.010 |
1% |
0.0021 |
0.5 |
Middle of the face |
N108 ROAD |
20.329 |
20.359 |
0.146 |
1% |
0.0297 |
0.5 |
3.4. notes#
Volume heat \(\rho {C}_{P}\) is not a step in this test, but must be declared for*Code_Aster*. We take \(\rho {C}_{P}=1.0J/{m}^{\mathrm{3 }}°C\).
Boundary condition \(\varphi =0.\) is implicit on free edges.
The small differences that remain correspond to a temperature gradient in the observed section. This is consistent with the modelled physical phenomenon.