Study On The Flow Characteristics On The Boundary Layer And The Sediment Movement Under The Wind Waves

Impact of wind wave induced lake is the main driver of sediment resuspension factor. Sediment resuspension, transport and diffusion, and deposition, likely to cause lake ,port, waterway silting, and even change the illumination of water, causing water biological response to environmental changes , on the lake and ecosystem an important impact .Study found that storm water flow near the end of the instantaneous vertical velocity and vertical velocity between the phase difference and phase difference with increasing distance from the end of the gradual increase, with the result of slightly different wave theory, in the outer layer of water near the bottom of this difference Constant is, same with a slight wave theory; slight wave with significant wave calculated with the measured maximum velocity near the end of the maximum flow rate is closer to the bottom, indicating that a slight wave theory can approximate the maximum near-bottom wave velocity; comparative experimental observation in And Dou theoretical incipient velocity of sediment found near the end with the instantaneous maximum flow rate silt condition described is not appropriate, we need a long time to replace the effective flow rate. After analysis, the average storm wave elements with a slight wave at the flow rate value calculated to describe the response of sediment, was consistent with the experimental concept of investigation, but also with the calculated values closer Dou, in practice this method can be used to determine soil Sha start situation; suspended load sediment vertical exponential distribution form. High concentration of sand at the bottom of the ceiling with suspended sediment concentration profile may be the turning point to define and participate in imitation of the existing formula for calculating the boundary layer thickness of the establishment of high concentrations of sediment thickness and the relationship between the elements of each wave in order to calculate High concentration layer thickness. Known bed suspended sediment concentration, water vertical distribution of suspended sediment concentration of the highest concentrations can be divided to two parts sand with calculated.