Numerical research of unsteady forces induced by turbulence inflow for propeller

In this work, the unsteady force response of non-cavitation propeller is analyzed. Numerical simulation is carried out using large-eddy simulation on the hydrodynamic performance of a ten-blade propeller. Different grid-propeller models are established, and the influence of turbulent flow conditions and skew angle on propeller unsteady force is studied. Results show that both turbulence intensity and turbulence length scale affect unsteady propeller force, which is mainly reflected in the broadband part of unsteady propeller force. In addition, the load distribution on the blade surface changes with the increase in the skew angle, which also changes the unsteady force performance of the propeller.