3. Modeling A#
3.1. Characteristics of modeling#
A non-linear 3D thermal modeling is used.
This modeling tests the creation of empirical thermal modes. We take for the base primal and the dual base TOLE_SVD = 1.E-3.
3.2. Characteristics of the mesh#
The mesh contains 27 elements of type HEXA8.
3.3. Tested sizes and results#
We test some values of the primal base (as they are empirical modes, the tests are done to the nearest sign):
We test some values of the dual base (as they are empirical modes, the tests are done to the nearest sign):
Identification |
Reference type |
Point \(A\) - FLUX_NOEU/FLUX -Mode 1 |
|
Point \(A\) - FLUX_NOEU/FLUY -Mode 1 |
|
Point \(A\) - FLUX_NOEU/FLUX -Mode 2 |
|
Point \(A\) - FLUX_NOEU/FLUY -Mode 2 |
|
Point \(A\) - FLUX_NOEU/FLUX -Mode 3 |
|
Point \(A\) - FLUX_NOEU/FLUY -Mode 3 |
|
We test the values of the reduced coordinates (table COOR_REDUIT) \({a}_{m}^{T}\) calculated when extracting empirical modes. For the primal base (temperature):
Identification |
Instant |
Mode |
Reference type |
\({a}_{m=1,t=10s}^{T}\) |
|
1 |
|
\({a}_{m=1,t=4s}^{T}\) |
|
1 |
|
\({a}_{m=3,t=10s}^{T}\) |
|
3 |
|
\({a}_{m=3,t=4s}^{T}\) |
|
3 |
|
For the dual base (heat flow \({\Phi }\)):
Identification |
Instant |
Mode |
Reference type |
\({a}_{m=1,t=10s}^{{\Phi }}\) |
|
1 |
|
\({a}_{m=1,t=4s}^{{\Phi }}\) |
|
1 |
|
\({a}_{m=4,t=10s}^{{\Phi }}\) |
|
4 |
|
\({a}_{m=4,t=4s}^{{\Phi }}\) |
|
4 |
|
3.4. notes#
We cannot say anything in absolute terms about the precision of these values because we are testing values of non-regression, but the two bases produced (in temperature and in flow) will be tested in the other models to compare with the full calculation.