抄録
The falling motion of particle clouds, produced by direct dumping of particles from water surface, into a finite water depth as well as the motion of horizontally propagating particle clouds, subsequently formed after impinging of the falling particle cloud on the bottom, along the boundary, are investigated experimentally. The study shows from the particle thermal theory and the present experimental results that the falling motion of the clouds is significantly affected by the depth of ambient water, and that the spreading distance of the horizontally propagating particle cloud become larger as the ambient water depth increases. It results in the sediments, carried by the cloud, deposit in wider area. The effects of resuspension of particles, due to impingement of the falling cloud, is also quantified in terms of the velocity, maximum width and time scale to govern resuspension process.
