Fully 3D ship hydroelasticity: Monolithic versus partitioned strategies for tight coupling |
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| Institution: | 1. Centre Internacional de Mètodes Numèrics a l’Enginyeria (CIMNE), Edifici C1, Campus Norte, UPC, Gran Capitán s/n, Barcelona, 08034, Spain;2. Universidad Politécnica de Cataluña (UPC), C. Gran Capitan s/n, Campus Nord, Barcelona, 08034, Spain;3. Compass Ingeniería y SItemas, C. Gran Capitan s/n, Campus Nord, Barcelona, 08034, Spain;1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, 300072, China;2. Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UK;1. School of Naval Architecture and Ocean Engineering, Dalian University of Technology (DUT), NO-116024, Dalian, China;2. Department of Marine Technology and Centre for Autonomous Marine Operations and Systems (AMOS), Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway;1. University of Duisburg-Essen, Institute of Ship Technology and Ocean Engineering, Duisburg, Germany;2. DNV GL, Hamburg, Germany;1. Posgrado en Ingeniería Estructural, Universidad Autónoma Metropolitana - Azcapotzalco, México City, Mexico;2. Laboratory of Numerical Simulation of Metocean and Hydrodynamic Phenomena, Exploration and Production Technology Center, Mexican Petroleum Institute, Boca del Río, Veracruz, Mexico;3. Departamento de Materiales, Universidad Autónoma Metropolitana - Azcapotzalco, México City, Mexico |
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| Abstract: | This paper analyzes the partitioned and monolithic strategies to simulate tightly coupled hidroelastic problems. The seakeeping hydrodynamics solver used is based on a first-order linear time-domain FEM model with forward speed and double-body linearization. The structural dynamics solver is based on a full 3D time-domain FEM with corotational shell elements accounting for the geometric non-linearity. Both solvers are implemented under the same programming framework, which allows to implement the monolithic strategy, and to minimize the communication overheads of the partitioned strategy. Two case studies are used to test and compare the partitioned and monolithic coupling: a flexible catamaran in oblique waves, and a large floating reticulated structure made of fiber reinforced plastic. In both cases, the monolithic strategy is between three and four times faster than the partitioned strategy.This project has been developed under the H2020 project FIBRESHIP aimed at developing the technology to design and build the structure of large-length vessels in fiber reinforced polymers. |
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