Hello,
There is no such limitation. You just need to be aware that the logical units of files change when there is a coupling, so there will be a problem if you read the files with hardcoded numbers. You must use the parameterised numbers, for example the liquid boundaries file in Telemac-2D has the logical unit:
T2D_FILES(T2DIMP)%LU
T2DIMP is an integer with value 12 and without coupling T2D_FILES(T2DIMP)%LU
will be also 12, but it will be different in case of coupling.
Another point is that you must keep the keywords PRESCRIBED FLOWRATES, etc., in your parameter file even if you use a liquid boundaries file, otherwise the program will take prescribed steady values in the boundary conditions file.
I hope there is a solution in these two remarks...
Jean-Michel Hervouet