Centre bow and wet-deck design for motion and load reductions in wave piercing catamarans at medium speed
| Autor: | Damien Holloway, B Shabani, Jason Lavroff, Giles Thomas, Michael R. Davis |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.industry
Mechanical Engineering Full scale Motion (geometry) 020101 civil engineering Ocean Engineering 02 engineering and technology Structural engineering Slamming 01 natural sciences 010305 fluids & plasmas 0201 civil engineering Deck Hull 0103 physical sciences Bending moment Head (vessel) 14. Life underwater business Reduction (mathematics) Geology |
| Zdroj: | Ships and Offshore Structures. 16:83-99 |
| ISSN: | 1754-212X 1744-5302 |
| DOI: | 10.1080/17445302.2019.1708043 |
| Popis: | For wave piercing catamarans, the centre bow length and tunnel clearance are important design factors for slamming, passenger comfort and deck diving. This experimental study determined the influence of centre bow (CB) and wet-deck geometry on their motions and loads at reduced speed using five configurations. A 2.5 m hydroelastic segmented catamaran model was tested in regular head seas in wave heights equivalent to 2.7 m, 4.0 m and 5.4 m at full scale. Higher wet-decks had higher vertical accelerations but reduced slamming loads. The greatest peak vertical CB loads ranged between 18–105% of the total hull weight. Regression models were obtained for the vertical loads and bending moments. A reduction of speed from 38 knots to 20 knots reduces the maximum slam loads by approximately 30% in regular waves. Considering both low and high speeds, the Short CB was found to be a consistent design for slamming reduction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|