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Drop Tests and Modeling of Water Entry of Air-Cavity Hull Sections

[+] Author Affiliations
Dawn Keehnel, Konstantin I. Matveev

Washington State University, Pullman, WA

Paper No. OMAE2014-23060, pp. V08AT06A006; 7 pages
doi:10.1115/OMAE2014-23060
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8A: Ocean Engineering
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4550-9
  • Copyright © 2014 by ASME

abstract

Marine vessels sailing through waves may experience very high loads during slamming events. The present study addresses a novel air-cavity hull configuration that contains air trapped between rigid side hulls and a platform. Laboratory drop tests have been conducted with two-dimensional sections imitating air-cavity hulls. The platform vertical position was the main variable parameter. Time-dependent accelerations and pressure measured at the platform center are reported. Peak values of these variables and their occurrence times are identified. The captured air pockets are found to reduce maximum slamming loads. A simplified mathematical model is applied for simulating the initial phase of the air-cavity hull water entry. The obtained results can be used for seakeeping assessment of air-cavity ships as well as validation of more sophisticated mathematical models for hull slamming.

Copyright © 2014 by ASME
Topics: Modeling , Cavities , Water , Hull

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