Application of a variational method to the vertical hydrodynamic impact of axisymmetric bodies

Autor(es)

Santos, Flavia M. ^[1] ; Casetta, Leonardo ^[1] ; Pesce, Celso P. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Politecn, Dept Mech Engn, Offshore Mech Lab, BR-05508 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: APPLIED OCEAN RESEARCH; v. 39, p. 75-82, 2013.
• Citações Web of Science: 3

Resumo

The application of a desingularized variational numerical method to the vertical hydrodynamic impact problem of axisymmetric bodies is addressed here within the so-called Generalized von Karman Model (GvKM). A weak formulation is used and the velocity potential is numerically approximated in a Sobolev space. Trial functions are conveniently written as finite summations of elementary potentials. A main advantage of the proposed technique is the fact that a first-order error in the velocity potential computation implies a second-order error in the added mass value. Good agreement in added mass calculations is verified for a sphere and for an oblate spheroid in comparison with results obtained from WAMIT (R). (C) 2012 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 10/07008-9 - Desenvolvimento de métodos numéricos aplicados ao problema de impacto hidrodinâmico em estruturas oceânicas
• Beneficiário: Flávia Milo dos Santos
• Modalidade de apoio: Bolsas no Brasil - Doutorado