Hello Rima
If I understand well, you want to use the same hydrodynamic input for a long sediment simulation, is it?
This is possible by the use of Sisyphe in a standalone way. This is possible until release v7P3.
For version v8p0, this option is removed (I think) and you can do the same task by adding telemac2d.F in your fortran folder and comment all what is inside the time loop apart from the call to sisyphe and result printout.
I hope this helps
kind regards
Riadh