Abstract: Time domain method was used to simulate deepwater current generation system by solving N-S equation and k -ω turbulent model. Three dimensional model is created and calculated in order to investigate the distribution of vertical profile velocity in the test area, disclose the fluid characteristics of the current generation system. Multi-block structural grids are used to create domain meshes. Non-matching grids are created between culverts and deepwater basin which connect with interface method. The numerical result and full-scale measurement data fit a bit well through comparison, indicating CFD method is available in simulating Current generation system. Flow field is uniform and constant in test area, the distribution of vertical profile velocity meets test need, which indicates the performance of current generation system is pretty good. In addition, the flow distributions around containers, inflow and outflow galleries, turning vanes etc are also predicted by CFD methods. The results provide an important reference for further research on flow characteristic of current generation system, effectively adjusting the current velocities, increasing efficiency of current generation system and model test precision with current.

Key words: current generation system, vertical current profile, gallery, deepwater basin