Numerical Calculation Of Composite Propeller Based On FSI

Propeller,as a common propulsion device,has the characteristics of simple structure,convenient use and high efficiency.But with the rapid development of the shipbuilding industry,the ship develops towards the characteristics of large scale and high speed,which also requires more.At present,the conventional propeller has many disadvantages,such as large noise,no corrosion resistance,short service life and so on,so many new type propellers have emerged.And due to the change of material properties,the fluid-structure interaction of propellers has attracted more and more attention.In this paper,the following two aspects are carried out on the two ways fluidstructure interaction of propeller:(1)For the DTMB4119 propeller under different working conditions,using the standard k-e,RNG k-e and SST K-W turbulence model,the open water performance of the propeller is calculated by numerical simulation.The results are compared with the experimental results given in the reference literature.The results show that the error between the RNG k-e turbulence model and the literature are minimum.(2)Three isotropic materials of alloy steel,nickel aluminum bronze and glass fiber are used to investigate the relationship between the hydrodynamic performance of a propeller,the response characteristic of the structure and the properties of the material.From the simulation results,the material properties have little influence on the first two kinds of material propellers,and the interaction between the fluid and the solid can be ignored,but the effect on the propeller of glass fiber material is larger.The open water performance,the flow field characteristics and the stress strain and deformation of the blade have obvious changes.(3),Calculating and comparing the fluid solid coupling characteristics of Considering the effect of composite stacking mode on composite propeller.The results show that the stacking mode method has little effect on the hydrodynamic performance of propeller,but it has great influence on the stress and strain of propeller.