A study into the FSI modelling of flat plate water entry and related uncertainties. (November 2022)

• Record Type: Journal Article
• Authors: Yan, Dongni; Mikkola, Tommi; Lakshmynarayanana, Arun; Tödter, Simon; Schellin, Thomas E.; Neugebauer, Jens; Moctar, Ould el; Hirdaris, Spyros
• Is Part Of: Marine structures. Volume 86(2022)
• Publication Date: 2022-11
• Subjects: Flat water entry -- Impact loads -- Fluid structure interactions (FSI) -- Uncertainties; Naval architecture -- Periodicals; Offshore structures -- Periodicals; Architecture navale -- Périodiques; Structures offshore -- Périodiques; Naval architecture; Offshore structures; Periodicals; 620.4162
• DOI: 10.1016/j.marstruc.2022.103296
• Languages: English
• ISSNs: 0951-8339

Abstract

Abstract: This paper presents systematic comparisons of experiments against fluid structure interaction (FSI) simulations for flat water plate entry. Special focus is attributed on hydroelasticity and air trapping effects, quantification of the experimental and numerical uncertainties and the validity of modelling assumptions for the prediction of bottom slamming induced loads. Consequently, the American society of Mechanical Engineers standard for Verification and Validation is used to estimate the errors. Numerical and experimental results agree favourably. It is shown that pressures and strains may be prone to spatial effects that lead to minor deviations between experiments and simulations. High frequency vibration modes and model boundary conditions may also influence the results. Highlights: Water entry experiments are used to validate rigid and hydroelasticity induced impact loads on ship plate structures. Two-way coupled FFSI is enabled by combining in vacuo FEA structural dynamics with RANS CFD. Comparisons demonstrate good idealization of peak loads. The ASME V&V method is suitable for high fidelity uncertainty modelling.