Vortex Suppression and Flow Pattern Analysis of a Hydrofoil with Parallel Grooves

As one of the typical negative factors affecting vortex structure and flow characteristics hydraulic machinery, TLV has a non-negligible impact on energy performance. In order to improve utilization efficiency machinery in marine energy, parallel grooves is proposed applied NACA0009 hydrofoil. Subsequently, an exhaustive numerical analysis carried out adopting SST k-ω turbulence model, effects position spacing suppression effect are investigated. The presence leads decrease lift-to-drag ratio hydrofoil within 5%, but it can effectively suppress development reduce area TLV. destroy PTLV STLV, have greater influence take performance into account, L3T1 recommended.