Hi, I have been trying to set up a CHT internal coupling simulation of a T-Junction in code saturne to measure the temperature gradients in the pipe wall. I have this working in a T-Junction geometry where there is no fillet i.e a 90 degree corner. However when i add a fillet and carry out the same workflow in SALOME of partitioning, assigning a fluid and solid region and meshing the full geometry as I did on the geometry with the 90 degree corner, the simulation no longer works. I know this is code_saturne but the geometry was made in SALOME, I’m going to assume the issue lies there obviously. Below are the error logs:
field minimum maximum set mean spatial mean
v boundary_stress -15438 15516 -5.3207 0.63226
v boundary_stress[Y] -15682 15682 -3.7718 26.518
v boundary_stress[Z] -12335 8541.6 -139.42 -54.865
v ǁboundary_stressǁ 0.063707 15682 2953.3 2058
v Yplus 0 189.29 6.8319 9.4802
v Boundary temperature 20 60 -nan -nan
v Boundary Density 1000 7850 5187.2 5050.6
/home/saimmateen/Documents/code_saturne-9.0.0/src/base/cs_log_iteration.cpp:1111: Fatal error.
Invalid (not-a-number) values detected for a field.
I have also seen that the number of fluid faces is not equal to that of the solid faces for the coupling interface: “auto:internal_coupling_0”
boundary faces: 15424
“auto:internal_coupling_0_fluid”
boundary faces: 8522
“auto:internal_coupling_0_solid”
boundary faces: 6902
The simulation with the 90 degree corner has 37k boundary faces. I would expect it to be less for the fillet, but not half as much. How do i properly make a T-Junction geometry with solid pipe and fluid volume and filleted to use in Code_Saturne CHT internal coupling?