Abstract
The standard units of turbidity generation by dredging operations, which play the important roll in predicting the environmental influence to the water around, are usually estimated empirically from accumlated data of similar cases. Near future, deterministic estimation method of the turbidity generation by dredging is expected to be required. For the first step of this approach, a numerical trial is made by the smoothed-particle hydrodynamics (SPH) method. The generated flow by grab operation was reproduced well by detailed discription of the shape and movement of grab with particles.
