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Influence of mixed flows on ship hydrodynamics in dredged channels

Terziev, Momchil and Tezdogan, Tahsin and Incecik, Atilla (2019) Influence of mixed flows on ship hydrodynamics in dredged channels. In: 38th International Conference on Ocean, Offshore & Arctic Engineering, 2019-06-09 - 2019-06-14, Scottish Event Campus. (In Press)

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Abstract

Although there is a significant body of research devoted to the shallow water hydrodynamic aspects of ships, several unexamined topics remain. Among these is that of critical outer flow in a dredged channel and its influence on parameters of interest. While empirical methods can be used with ease to resolve this, they can provide results with reliability sufficient only for an early design stage. On the other hand, more sophisticated potential flow theories are either inapplicable or do not perform well at the critical limit. However, RANS (Reynolds Averaged Navier-Stokes) – based tools can accurately capture all underlying phenomena without relying on limiting assumptions. This paper presents an attempt at comparing some results obtained via a CFD-based RANS solver and the slender body theory for critical outer flow in a dredged channel.