`tfcth` calculated inconsistently
Opened this issue · 3 comments
In PROCESS/examples/csv_output_large_tokamak_MFILE.DAT, tcfth is output twice. The first output is wrong - it shows the initial value, not the final value after iteration.
tfcth____________________________________________________ (itvar032)____________________ 1.2000E+00
TF_coil_inboard_leg_(m)__________________________________ (tfcth)_______________________ 8.6482E-01 ITV
This probably results from incomplete implementation of Issue #515. Note that in this run thkcas is also an iteration variable:
Inboard_leg_case_inboard_"nose"_thickness_(m)____________ (thkcas)______________________ 2.2965E-01 ITV
In #515 I recommended that we should remove the option of having tfcth as an iteration variable, but this obviously hasn't been done. I recommended that we should use thkcas and thkwp as iteration variables instead. There are of course many ways to solve this problem, but over-determining tfcth is not one of them.
This is another high priority issue since it could make PROCESS behave erratically and might prevent convergence.
@jonmaddock @jmorris-uk @timothy-nunn @ajpearcey
Tim, If you are going to look at this I would suggest we get some comments from @ajpearcey , @jmorris-uk and @stuartmuldrew.
I am looking at the magnet dimensions as this is inter related with the cable pack problem.
Yes, there is a connection between the overall dimensions of the TF coil cross-section (winding pack and case) and the dimensions of the conductor inside it.
However, I suggest trying to keep these topics separate as far as humanly possible.