Hydrodynamic coefficients of a submerged pulsating sphere in finite depth |
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| Authors: | D B S Lopes A J N A Sarmento |
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| Institution: | Department of Mechanical Engineering, Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal |
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| Abstract: | By extending the work of Linton (Linton, C.M., 1991. Radiation and diffraction of waver waves by a submerged sphere in finite depth. Ocean Engineering 18 (1/2), 61–74), the problem of radiation of water waves by a submerged pulsating sphere in finite depth is formulated using the multipole method. As in Linton (1991), this leads to an infinite system of linear equations, which are easily solved numerically. Simple expressions are derived for the hydrodynamic characteristics of such a body. Results showing the effect of varying both the immersion depth and the water depth on the hydrodynamic coefficients of the pulsating sphere are given. The paper resumes the work presented in Lopes (Lopes, D.B.S., 1999. On the study of the Archimedes wave swing device for wave energy utilization (in Portuguese). MSc on the Management and Modelling of the Marine Environment, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa.). |
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| Keywords: | Linear theory Frequency domain Pulsating sphere Submerged sphere Hydrodynamic coefficients Multipole |
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