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Improvement of Tidal Circulation in a Closed Bay using Variation of Bottom Roughness  

BOO SUNG YOUN (Department. of Naval Architecture, Korea Naval Academy)
Publication Information
Journal of Ocean Engineering and Technology / v.19, no.1, 2005 , pp. 1-7 More about this Journal
Abstract
Tidal circulation in a closed bay using a variation of bottom roughness was investigated through the numerical experiments based on a finite difference multi-level model. Various distributions of bottom roughness in the bay were implemented to determine their effects. It hadbeen determined that residual currents can be generated from the differences of the bottom roughness between streaming and reverse flow directions. The magnitude of residual currents and volume flow rate increase when the relative ratio of bottom roughness between streaming and reverse flow directions increase. Circulation in the closed bay is also improved by the employment of the change of bottom roughness.
Keywords
Bottom Roughness; Tidal Circulation; Multi-level Model; Residual Current; Volume Flow Rate;
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