Journal article
Composite bottom panel slamming of a fast planing hull via tightly coupled fluid-structure interaction simulations and sea trials
Ocean engineering, Vol.143, pp.240-258
10/01/2017
DOI: 10.1016/j.oceaneng.2017.07.053
Abstract
The paper presents partitioned tightly coupled fluid-structure interaction (FSI) simulations for composite panel slamming of a high-speed planing hull, including comparison with full-scale experiments. Panels with different layout/stiffness are investigated. Computational fluid dynamics (CFD) is performed using the URANS code CFDShip-Iowa. Computational structural dynamics (CSD) uses modal expansion by ANSYS finite elements. One- and two-way tightly coupled FSI is performed. The complexity of sea-trial conditions is reduced by statistical/frequency analysis, allowing for a simplified representation by one regular wave. Simulations provide details of slamming, including correlation of re-entering pressure peaks with motions and strain peaks. Numerical/modeling issues are discussed. Expected value and associated uncertainty of experimental pressure/strain peak and duration are used for validation. The difference of panels’ dynamics is well predicted. Validation errors and uncertainties (average 25% and 14%) are quite large. Nevertheless, errors always fall within one standard deviation of experimental-data individual readings. Results are promising especially if compared to earlier slamming studies for regular/irregular waves in controlled towing tank tests, which show average error and validation uncertainty of 25% and 10%. The current study lays the groundwork for research on high-fidelity CFD/CSD FSI of real-world geometry slamming and ultimately multidisciplinary design optimization of structural and hull-form parameters.
•A high-speed planing hull with composite bottom panels is studied.•Two-way tightly coupled FSI simulations are performed in head and following waves.•Regular wave simulations are compared to sea trials.•Effects of composite material layout are investigated.•Effects of one- versus two-way coupling on pressure and strain are discussed.
Details
- Title: Subtitle
- Composite bottom panel slamming of a fast planing hull via tightly coupled fluid-structure interaction simulations and sea trials
- Creators
- S Volpi - University of IowaM Diez - University of IowaH Sadat-Hosseini - University of IowaD.-H Kim - University of IowaF Stern - University of IowaR.S Thodal - Lehigh UniversityJ.L Grenestedt - Lehigh University
- Resource Type
- Journal article
- Publication Details
- Ocean engineering, Vol.143, pp.240-258
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.oceaneng.2017.07.053
- ISSN
- 0029-8018
- eISSN
- 1873-5258
- Grant note
- DOI: 10.13039/100000006, name: Office of Naval Research, award: N00014-13-1-0616, N00014-13-1-0617
- Language
- English
- Date published
- 10/01/2017
- Academic Unit
- IIHR--Hydroscience and Engineering; Mechanical Engineering
- Record Identifier
- 9984195066602771
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