Dredge Cutterhead and Drill Bit Flow Processes
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Computer simulations will be extended to learn more about the processes         of soil movement and transport by a confused 3-D flow field affected by         complex boundaries, rotating cutterblades, variable flow rates and              positioning of the intake to the dredge pump.  New dredge intake and            cutterhead shielding techniques will be tested and more extensive               efforts made to evaluate cutterhead flow processes, as well as to               examine interphase mass transfer as affected by linear and non-linear           friction relationships.  These studies will refine dredge cutters,              pipeline trenchers, and offshore mining techniques and later advance to         analyses of oil well drilling bits and tunneling machines.  Additional          hydraulic studies using a 1:6 scale model will establish scaling                relationships for subsequent prototype tests.
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{'Code': '5373', 'Text': 'SBIR Phase II'}
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