Fluid–structure interaction of downwind sails: a new computational method

Cirello, Antonino; Cucinotta, Filippo; Ingrassia, Tommaso; Nigrelli, Vincenzo; Sfravara, Felice

doi:10.1007/s00773-018-0533-7

Cited by 18 publications

(16 citation statements)

References 23 publications

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“…Electrical strain gauges were also installed on the test bench frame and the pod struts to compare the strain recorded during the experiment with that obtained from finite element analyses [40][41][42][43].…”

Section: Experimental Tests and Data Analysismentioning

confidence: 99%

Industry 4.0: smart test bench for shipbuilding industry

Giallanza

Aiello

Marannano

et al. 2020

Int J Interact Des Manuf

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Industry 4.0 promises to increase the efficiency of production plants and the quality of the final product. Consequently, companies that implement advanced solutions in production systems will have a competitive advantage in the future. The principles of Industry 4.0 can also be applied to shipyards to transform them into “smart shipyards” (Shipyard 4.0). The aim of this research is to implement an interactive approach by Internet of Things on a closed power-loop test bench equipped with sophisticated sensors that is specifically designed to test high-power thrusters before they are installed on high-speed crafts, which are used in passenger transport. The preliminary results of the proposed Internet of Things-platform demonstrates the efficacy of the decision-making support tool in improving the design of propulsion systems and increasing their efficiency compared to traditional systems.

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Section: Experimental Tests and Data Analysismentioning

confidence: 99%

Industry 4.0: smart test bench for shipbuilding industry

Giallanza

Aiello

Marannano

et al. 2020

Int J Interact Des Manuf

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show abstract

“…On the other hand, a Computational Fluid Dynamics (CFD) approach has been routinely employed in the field of naval architecture and ocean engineering owing to the merits that CFD can overcome the difficulties of nonlinear problems in theoretical studies while it is more cost-efficient compared to physical experiments [12][13][14][15]. Furthermore, the afore-mentioned shortcomings of Granville's method can be avoided using CFD.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effect of Heterogeneous Hull Roughness on Ship Resistance Using CFD

Song

Demirel

Muscat–Fenech

et al. 2021

JMSE

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Research into the effects of hull roughness on ship resistance and propulsion is well established, however, the effect of heterogeneous hull roughness is not yet fully understood. In this study, Computational Fluid Dynamics (CFD) simulations were conducted to investigate the effect of heterogeneous hull roughness on ship resistance. The Wigley hull was modelled with various hull conditions, including homogeneous and heterogeneous hull conditions. The results were compared against existing experimental data and showed a good agreement, suggesting that the CFD approach is valid for predicting the effect of heterogeneous hull roughness on ship resistance. Furthermore, the local distributions of the wall shear stress and roughness Reynolds number on the hull surface were examined to assess the flow characteristics over the heterogeneous hull roughness.

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“…It is interesting to notice that, in this field, the design approach is mostly based on the traditional design techniques of trial-and-error. Consequently, the obtained results are highly dependent on the designer experience and knowledge [2,3]. To facilitate the design of hulls, naval engineers are investigating the possibility to define the so-called hull equation [4].…”

Section: Introductionmentioning

confidence: 99%

Parametric Hull Design with Rational Bézier Curves and Estimation of Performances

Ingrassia

Mancuso

Nigrelli

et al. 2021

JMSE

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In this paper, a tool able to support the sailing yacht designer during the early stage of the design process has been developed. Cubic Rational Bézier curves have been selected to describe the main curves defining the hull of a sailing yacht. The adopted approach is based upon the definition of a set of parameters, say the length of waterline, the beam of the waterline, canoe body draft and some dimensionless coefficients according to the traditional way of the yacht designer. Some geometrical constraints imposed on the curves (e.g., continuity, endpoint angles, curvature) have been conceived aimed to avoid unreasonable shapes. These curves can be imported into any commercial Computer Aided Design (CAD) software and used as a frame to fit with a surface. The resistance of the hull can be calculated and plotted in order to have a real time estimation of the performances. The algorithm and the related Graphical User Interface (GUI) have been written in Visual Basic for Excel. To test the usability and the precision of the tool, two existing sailboats with different characteristics have been successfully replicated and a new design, taking advantages of both the hulls, has been developed. The new design shows good performances in terms of resistance values in a wide range of Froude numbers with respect to the original hulls.

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Fluid–structure interaction of downwind sails: a new computational method

Cited by 18 publications

References 23 publications

Industry 4.0: smart test bench for shipbuilding industry

Industry 4.0: smart test bench for shipbuilding industry

Investigating the Effect of Heterogeneous Hull Roughness on Ship Resistance Using CFD

Parametric Hull Design with Rational Bézier Curves and Estimation of Performances

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