In order to research the effect of propeller rotating speed and flowing velocity on the corrosion static electric field under sea water

a method for the corrosion static electric field under laminar medium is proposed. Combining the theory of hydrodynamics and electrochemistry

the rotational model of curved propeller in laminar flow is established

the momentum integral method and electrochemical method are used to calculate boundary layer thickness and ultimate corrosion current density of curved blade surface in laminar medium respectively. An electric dipole model is established to solve the corrosion static electric field based on the current density

and the correctness of the conclusion is verified by experiments. The results show that the amplitude of electrostatic field increases with the increase of propeller speed and medium velocity. The theoretical data are in good agreement with the experimental data when the velocity and rotational speed are small.