Experimental hydroelastic characterization of slamming loaded marine panels

Stenius, Ivan; Rosén, Anders; Battley, Mark; Allen, Tom

doi:10.1016/j.oceaneng.2013.09.007

Cited by 75 publications

(25 citation statements)

References 21 publications

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“…Only few efforts have documented a direct measurement of the hydrodynamic loading at selected locations on the impacting structure through pressure gauges (Charca et al, 2009;Battley and Allen, 2011;Stenius et al, 2013). Recently, a non-invasive contactless experimental methodology based on particle image velocimetry (PIV) (Raffel et al, 1998;Van Oudheusden, 2013) has been proposed to experimentally reconstruct the pressure field in water entry problems (Panciroli and Porfiri, 2013;Nila et al, 2013;Panciroli et al, 2015;Shams et al, 2015;Jalalisendi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessment of PIV-based analysis of water entry problems through synthetic numerical datasets

Facci

Ubertini

Porfiri

2015

Journal of Fluids and Structures

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a b s t r a c tThe phenomenon of hull-slamming, that is, the sudden impact of a solid body on the water surface, is critical in the design of naval structures. Thus, the development and validation of schemes to predict the slamming load and elucidate energy exchange during water entry are of fundamental importance in a wide range of engineering applications. Recent studies have demonstrated the possibility of using direct flow measurements from particle image velocimetry (PIV) to investigate the kinetics of water entry. Specifically, these efforts have contributed a first characterization of the hydrodynamic loading on impacting wedges and of the energy imparted to the water pile-up and the spray jets. Here, we seek to provide a thorough assessment of such a PIV-based approach through synthetic datasets, in which PIV parameters, such as the camera acquisition rate and the size of the interrogation area, are systematically varied, without experimental confounds. We implement a direct computational framework to study the two-dimensional flow physics generated during the water entry of a rigid wedge. Water and air are treated as immiscible phases and their relative motion is utilized to track the free surface dynamics. Our results show that the PIV-based methodology allows for an accurate reconstruction of the pressure field from the measured velocity field, except for early stages of the impact and for a small region close to the free surface. We also demonstrate that the reconstruction is only marginally affected by the spatial resolution, while a sufficiently high acquisition frequency is required to correctly predict the pressure field in the pile-up region. The proposed computational framework can also find application in the analysis of less studied aspects of water entry problems, such as cycling loading, flow transitions and separation, and formation of spray jets.

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Section: Introductionmentioning

confidence: 99%

Assessment of PIV-based analysis of water entry problems through synthetic numerical datasets

Facci

Ubertini

Porfiri

2015

Journal of Fluids and Structures

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“…While these approaches have been shown to accurately describe hydrodynamic loading in a multitude of experimental studies, their validation is largely limited to specific geometries, whereby the majority of experimental studies have focused on flat wedges (Bisplinghoff and Doherty, 1952;Greenhow, 1987;Engle, 2003;Wu et al, 2004;Carcaterra and Ciappi, 2004;Tveitnes et al, 2008;Lewis et al, 2010;Stenius et al, 2013), cylinders (Greenhow and Yanbao, 1987;Cointe and Armand, 1987;Garrison, 1996;Battistin and Iafrati, 2003;Sun and Faltinsen, 2006), spheres (De Backer et al, 2009;El Malki Alaoui et al, 2012;Truscott et al, 2012), and cones (De Backer et al, 2009;El Malki Alaoui et al, 2012). More complex geometries, such as paraboloids and pyramids, have only been investigated in theoretical studies (Scolan and Korobkin, 2001;Korobkin, 2002;Gazzola et al, 2005;Korobkin and Scolan, 2006;Moore et al, 2012), and the effect of geometric curvature on the water entry of rigid bodies is yet to be fully experimentally quantified, see also the review by Abrate (2013).…”

Section: Introductionmentioning

confidence: 99%

Experiments on the water entry of curved wedges: High speed imaging and particle image velocimetry

2015

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“…It is of interest in many different contexts. The most obvious are probably those related to the naval field in connection to both displacement ships (Kapsenberg, 2011) and high speed planing crafts (Stenius et al, 2013). However, the phenomenon is also relevant in the aeronautical field in connection to the aircraft emergency landing on water, which is known as ditching.…”

Section: Introductionmentioning

confidence: 99%

High-speed ditching of a flat plate: Experimental data and uncertainty assessment

Iafrati

Grizzi

Siemann

et al. 2015

Journal of Fluids and Structures

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Experimental hydroelastic characterization of slamming loaded marine panels

Cited by 75 publications

References 21 publications

Assessment of PIV-based analysis of water entry problems through synthetic numerical datasets

Assessment of PIV-based analysis of water entry problems through synthetic numerical datasets

Experiments on the water entry of curved wedges: High speed imaging and particle image velocimetry

High-speed ditching of a flat plate: Experimental data and uncertainty assessment

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