Effect of Sheltering on Spheres in Long Waves
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 117, Issue 3
Abstract
The effect of sheltering and boundary proximity is examined for a sphere exposed to long nonlinear waves. Velocity field and force measurements are obtained for several configurations of spheres near a boundary. As a single sphere approaches the bottom, the maximum horizontal force due to a solitary wave is found to increase. For clearances less than two sphere diameters, this is reflected by a marked decrease in the inertial coefficient and an increase in the drag coefficient The reverse effect is observed for two spheres sheltering on the bottom. As the sphere‐to‐sphere separation decreases, the maximum horizontal force decreases and is characterized by a decrease in and an increase in for separations less than two sphere diameters. These observations, together with results of other sheltering experiments in this study, imply that the specific location of an object with respect to the boundary and other objects is an important factor in the observed effects of unsteady flow.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 117 • Issue 3 • May 1991
Pages: 264 - 283
Copyright
Copyright © 1991 ASCE.
History
Published online: May 1, 1991
Published in print: May 1991
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