In order to understand the mechanism of cavity shedding and evolution, turbulent cavitating flows twisted hydrofoil were numerically investigated using k-? turbulence model ZGB cavitation model. The results numerical calculation experimental method are basically consistent, which confirms feasibility This study has obtained following conclusions. Firstly, can be summarized into six stages, shap...

The unsteady RANS equations for a two-dimensional hydrofoil were solved using ANSYS Fluent to model and simulate the at constant Reynolds number, Re, of 2 × 105 fixed reduced frequency, f*, 0.14. simulations performed by varying parameters, such as number deflectors N, tilt angle β, vertical spacing J* = J/c, determine effect upstream deflector’s position on hydrofoil’s performance. results dem...

The present study investigates experimentally and numerically the impact of composite materials on hydro-elastic performances a hydrofoil experiencing Fluid–Structure Interactions, focus bend–twist coupling phenomenon. Four flexible hydrofoils piercing free surface, with identical geometry extruded plan-form, constant NACA0015 section, are tested in cantilevered configuration hydrodynamic flume...

This paper presents systematic analysis and design of power split-hybrid configurations using a single planetary gearset and two electric machines for human-powered vehicles. All the 12 possible power split hybrid configurations are investigated, and their performances are compared to a normal (no power assist) bicycle, and two electric bicycles. Several performance indices, including the cycli...