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Modelica Component Models for Non-diffracting Floating Objects and Quasi-static Catenary Moorings

Savin Viswanathan
Dept. of Mechanical and Industrial Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway

Christian Holden
Dept. of Mechanical and Industrial Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway

Ladda ner artikelhttps://doi.org/10.3384/ecp20169101

Ingår i: Proceedings of the American Modelica Conference 2020, Boulder, Colorado, USA, March 23-25, 2020

Linköping Electronic Conference Proceedings 169:11, s. 101-10

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Publicerad: 2020-11-03

ISBN: 978-91-7929-900-2

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

In this paper, the theory behind determining the hydrodynamic response of a floating object in the presence of waves is discussed, followed by a simplification for the case of wave-transparent objects. The Morison equation is introduced as a means to estimate lateral wave and current loads on slender bodies. The quasi-static catenary approach to determine mooring forces is then discussed. Development of Modelica component-models to simulate the hydrodynamic response of free-floating and catenarymoored non-diffracting objects, in the presence of waves and depth varying current, is then dealt with in detail, and the results dicussed.

Nyckelord

hydrodynamics of non-diffracting floating objects, quasi-static catenary mooring, Modelica oceanengineering library.

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