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Title
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A PIV-based method for estimating slamming loads during water entry of rigid bodies
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Author
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Abstract
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| Hydrodynamic impact of bodies onto the water surface is a problem of great importance in the design of off-shore and naval structures (wave energy converters, off-shore platforms, high-speed boats, etc). Classical measurement techniques, namely pressure sensors, present major drawbacks in the determination of impact loads because of their intrusive nature. In this paper, we propose a method to determine the impact loads on rigid bodies during water entry, based on high-speed particle image velocimetry. The method consists of two steps: firstly, an automated procedure is developed to determine the velocity field from high-speed images during water impact. Secondly, the unsteady pressure field is estimated from the velocity fields, using a Poisson-based solver. The method is validated on a rigid wedge slamming experiment and the results are compared with results from computational fluid dynamics simulations (performed with the software LS-Dyna) and from the literature. |
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Language
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English
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Source (journal)
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Measurement science and technology. - Bristol
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Publication
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Bristol
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2013
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ISSN
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0957-0233
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DOI
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10.1088/0957-0233/24/4/045303
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Volume/pages
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24
:4
(2013)
, p. 1-12
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ISI
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000316452800016
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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