For professional or academic work requiring validated, support-backed free-surface modeling, contact Flow Science directly for a trial or quote. Using cracked software is not only illegal but unreliable for safety-critical engineering. If budget is a concern, open-source alternatives can serve as a legal and robust starting point.
While specific steps may vary, here is a general guide:
Would you like a deeper comparison of Flow-3D Hydro vs. open-source options like OpenFOAM or HEC-RAS?