Hello,
The Oregon State University tidal solutions like TPXO only give constants dependent on locations. They do not depend on time. Knowing these constants for every tidal constituent, the periods of the constituents, you can build the tidal signal as a sum of harmonic functions of every constituent you consider.
You can have a look at
www.opentelemac.org/index.php/kunena/16-...h-v6p2?start=10#6080
and the example tide of telemac2d with the steering file t2d_tide-ES_real.cas
Hope this helps,
Chi-Tuan