Application of the features of giant shark mouth structure for the supply lines of axial hydro turbines

This paper explores the feasibility of using a Giant Shark Mouth-Shaped Input Device (GSMSID) as an intake system for an axial hydraulic turbine to enhance the performance of hydraulic units. The study aims to evaluate the impact of the geometric characteristics of the input device on the turbine’s operational parameters and efficiency across different configurations. To identify the most energy-efficient intake geometry, CFD simulations were conducted. Additionally, a full-scale experiment was performed to validate the hydrodynamic calculations of both the hydraulic unit as a whole and the GSMSID in particular. Experimental results demonstrated the feasibility of integrating GSMSID at the inlet of an axial hydraulic turbine as an alternative to conventional intake designs. Tests compared the GSMSID-equipped turbine with a toroidal inlet of similar shape and dimensions, revealing an increase in power output. This study serves as a preliminary investigation into the potential of GSMSID as a more effective intake solution for axial hydraulic turbines, laying the foundation for further research and development in this field.