Modeling hydraulic dredge spoil fate Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/vq27zr42c

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  • Hydraulic dredging is and most certainly will remain a primary means of maintaining and improving ship channels and for land reclamation in near-shore water. The study of which this thesis describes a part is intended to develop a method of predetermining the immediate disposition of sand spoils from hydraulic dredging discharged in water. The results presented herein indicate that the longitudinal forward velocity field induced in still water by a model dredge discharge can be obtained from available results of jet flow studies for any discharge velocity. When combining this velocity field with particle settling velocity, particle trajectory can be computed. It is shown that a particle trajectory based on hydraulic sorting by particle size should also be workable in the case of a cross flow in the receiving water. A computer program which predicts particle trajectory for the quiescent receiving water condition is used to compute comparisons with experimental results. It was found that the theoretical framework proposed compares reasonably with those obtained in experiments in quiet water. However, in cross-flow conditions the comparisons between the experimental and theoretical results are not good. These observed differences are attributed to deceleration of the jet due to the cross flow and to the boundary conditions in the experimental model.
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  • description.provenance : Made available in DSpace on 2014-01-10T21:07:41Z (GMT). No. of bitstreams: 1 TsengYingChuan1974.pdf: 5481501 bytes, checksum: 93721395c547f7259e91970baefbc0c9 (MD5) Previous issue date: 1974-04-19
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