In this work the issue of wave-induced flow structures that develop around a large-diameter surface-piercing vertical circular cylinder is addressed. A strictly-linear wave case is considered and simulated numerically, solving the Euler equations in primitive variables, and the results are compared with those obtained from the corresponding close-form velocity-potential solution. Then, the swirling-strength criterion for flow-structure eduction is applied to the primitive-variable Euler-equations-derived velocity field. It is found that differently-shaped flow structures develop at the free surface and under the free surface, in particular at the cylinder wall. This field of structures is not detectable from the potential-derived velocity field, due to the purely mathematical nature of the latter.

Wave-field flow structures developing around large-diameter vertical circular cylinder

Lauria A.;
2011-01-01

Abstract

In this work the issue of wave-induced flow structures that develop around a large-diameter surface-piercing vertical circular cylinder is addressed. A strictly-linear wave case is considered and simulated numerically, solving the Euler equations in primitive variables, and the results are compared with those obtained from the corresponding close-form velocity-potential solution. Then, the swirling-strength criterion for flow-structure eduction is applied to the primitive-variable Euler-equations-derived velocity field. It is found that differently-shaped flow structures develop at the free surface and under the free surface, in particular at the cylinder wall. This field of structures is not detectable from the potential-derived velocity field, due to the purely mathematical nature of the latter.
2011
978-981436648-9
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/483677
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