Research on unsteady hydrodynamic performance of variable vector propeller based on Fluent

For more in-depth research on the hydrodynamic performance of VVP, the method for the prediction of the unsteady hydrodynamic performance of VVP by fluent is studied in this paper. The simulation model is built and meshed by tetrahedral, hexahedral unstructured hybrid grid. There is a partial encryption for grid near the VVP and the wake field. UDF program is provided to keep the blades move by the given law. Simulation is carried out in the Fluent and the simulation results are presented. The results show that the wake field of VVP is highly turbulent and the unsteady hydrodynamic performance of VVP vibrates erratically in a cycle, which differs greatly from the general propeller.