Hello Yixiang,
You should read the famous TELEMAC-3D user manual available on:
- $HOMETEL/documentation/telemac3d/user folder ($HOMETEL is where you have installed TELEMAC),
- or on the web:
wiki.opentelemac.org/doku.php?id=documentation_v8p1r1
In particular chapter 3 dealing with inputs and outputs.
Available 3D RESULT FILE FORMAT are:
- SERAFIN in single precision (binary),
- SERAFIND in double precision (binary),
- MED in double precision also (binary).
You can use the FORMATTED RESULTS FILE but you have to implement what you want to write.
Hope this helps,
Chi-Tuan