Method for calculating suspended sediment transport phase lag effect under wave action

The invention provides a method for calculating suspended sediment transport phase lag effect under wave action. The method includes the steps that particle kinetic energy is converted to potential energy, and suspension height of particles within a half cycle of the wave is determined; integral average is conducted on exponential distribution in the depth direction, so that vertical velocity of average depth of water particles in a particle suspension layer is obtained; sinking speed of suspended sediment particles in a wave boundary layer is obtained through correction according to the hampered sinking speed obtained after the particles withstand the collision action among particles in the sinking process and the vertical velocity of average depth of the water particles in the particle suspension layer; the phase lag effect parameter in the half cycle of the wave is obtained through calculation according to the sinking period of time of the suspended particles in the half cycle of the wave, the sinking spee