thermal balance on boundaries

[Yvan Fournier]

Hello,

For the first question, using cs_user_extra_operations-energy_balance.f90 is possible, but cs_user_extra_operations-scalar_balance_by_zone.f90 is a better solution.

For post_util.f90, the idea is not to modify the file, but use the function from that file in cs_user_extra_operations.f90 for example.

Regards,

Yvan