Wave effect on the trajectory of a high-speed rigid body in a water column

Autor:	C.W. Fan, Peter C. Chu
Přispěvatelé:	Oceanography
Rok vydání:	2010
Předmět:	Waves and shallow water Water mass Classical mechanics Orientation (geometry) Wind wave Trajectory Probability density function Mechanics Underwater Rigid body Physics::Atmospheric and Oceanic Physics Geology
Zdroj:	WIT Transactions on Engineering Sciences.
ISSN:	1743-3533 1746-4471
DOI:	10.2495/afm100331
Popis:	Waves form when the water surface is disturbed, for example, by wind or gravitational forces. During such disturbances energy and momentum are transferred to the water mass and sea-state is changed. For shallow water regions, the bottom topography affects the waves dramatically. Waves may cause an evident slant of the ocean surface with a large inclination angle of about 55 o . When a high-speed rigid body strikes the wavy ocean surface, the random ocean slope largely affects its underwater trajectory. Identification of such an effect is a key point in the prediction of a fast moving rigid body in a water column. The probability density equation (PDF) of the ocean wave slopes was used to generate the stochastic surface slope. A 6-degree of freedom (DOF) model of a fast-moving rigid body is used with the stochastic sloping surface as its waterentry condition. The PDFs of the body location and orientation are obtained from results of 6-DOF model runs. From temporal change of these PDFs, the wave effect on the trajectory of a high-speed underwater rigid body has been identified.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::948196c2d878b9d10587018ceb1cc862 https://doi.org/10.2495/afm100331 Zobrazit plný text záznamu