Excuse me, are these different from the previous bottom, bottom frication, free surface and water depth in physical sense? Or is it just French expression?
The correct definition of these variable names and ALL available variable names are defined by Telemac (not Blue Kenue). Therefore, it would be better asked in the
Telemac 2D section of the forum for their meanings. OR... perhaps check the Telemac 2D documentation.
That being said, I would suspect that they are the French translations of the same.
Kindly... Alan