Experimental and numerical hydrodynamic analysis of a stepped planing hull

Marco, Agostino De; Mancini, Simone; Miranda, Salvatore; Scognamiglio, Raffaele; Vitiello, Luigi

doi:10.1016/j.apor.2017.02.004

Cited by 130 publications

(58 citation statements)

References 18 publications

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“…Hence, a deeper analysis is required in order to investigate the issues in wetted surface evaluation by comparing the two different wetted surface evaluations, as shown in Table 4. As opposed to what happens in the URANS simulations that, generally, overestimated the wetted surface, as stated in De Marco et al [3], De Luca et al [28], and Mancini et al [29], the 2D + T method underestimates the wetted surface values. In particular, at low Fr, the analytical method fails in the estimation, specifically in the aft wetted surface evaluation.…”

Section: Wetted Surfaces and Wetted Length Analysiscontrasting

confidence: 62%

“…Furthermore, in order to evaluate the effectiveness of the 2D + T approach, the 2D + T results are compared with the Computational Fluid Dynamic (CFD) analysis performed for the same hull model available, with all CFD simulation details, in De Marco et al [3]. Table 3 shows that URANS high-quality simulations can achieve results close to the towing tank tests with an error generally less than 10% for the dynamic trim angle and total resistance.…”

Section: Towing Tank Vs 2d + T Methods Resultsmentioning

confidence: 99%

“…Step can create a significant reduction of a dynamic wetted surface and of the dynamic trim angle during high-speed forward motion and thus achieve a reduction of resistance at high speed. There are four options for the hydrodynamic analysis of a stepped hull: the towing tank test [1][2][3], empirical method [4,5], analytical methods [6], and numerical simulation [7,8].…”

Section: Introductionmentioning

confidence: 99%

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A Validation of Symmetric 2D + T Model Based on Single-Stepped Planing Hull Towing Tank Tests

Bilandi

Mancini

Vitiello

et al. 2018

JMSE

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In the current article, the hydrodynamic forces of single-stepped planing hulls were evaluated by an analytical method and compared against towing tank tests. Using the 2D + T theory, the pressure distribution over the wedge section entering the water and the normal forces acting on the 2D sections have been computed. By integrating the 2D sectional normal forces over the entire wetted length of the vessel, the lift force acting on it has been obtained. Using lift forces as well as the consequence pitch moment, the equilibrium condition for the single-stepped planing hull is found and then resistance, dynamic trim, and the wetted surface are computed. The obtained hydrodynamic results have been compared against the experimental data and it has been observed that the presented mathematical model has reasonable accuracy, in particular, up to Froude number 2.0. Furthermore, this mathematical model can be a useful and fast tool for the stepped hull designers in the early design stage in order to compare the different hull configurations. It should also be noted that the mathematical model has been developed in such a way that it has the potential to model the sweep-back step and transverse the vertical motions of single-stepped planing hulls in future studies.

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Section: Wetted Surfaces and Wetted Length Analysiscontrasting

confidence: 62%

Section: Towing Tank Vs 2d + T Methods Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Validation of Symmetric 2D + T Model Based on Single-Stepped Planing Hull Towing Tank Tests

Bilandi

Mancini

Vitiello

et al. 2018

JMSE

Self Cite

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“…In a work of (Pacuraru and Domnisoru, 2017) barge resistance using RANSE method is presented. Calculation of resistance using RANSE and LES turbulence model of a planing hull is shown in (De Marco et al, 2017). These studies together with author's study are examples of numerical towing tank experiments.…”

Section: Volumementioning

confidence: 99%

Grid Type Impact on the Results of the Volume of Fluid Method in the Free Surface Flow Calculations Around Ship Hull

Sugalski

Skrúcaný

2018

New Trends in Production Engineering

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This article presents results of the free surface flow around ship hull on two different types of computational grid. Each type of mentioned grid has its own advantages and disadvantages in particular cases, mostly in one phase simulation. Omitting cases with capitation, there is no free surface involved in one phase simulation. Multiphase simulations are crucial in the ship design process and optimization. Recreating free surface on the triangular mesh causes difficulties, in contrast to the hexahedral meshes, where calculated surface is more aligned to the physical border of the fluids. In this paper, results from the triangular mesh were compared to results from hexahedral mesh. Conclusions about triangular meshes in two phase simulation are presented. The computational fluid dynamic toolbox OpenFOAM is used to perform calculations of the total resistance of work boat in calm water.

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“…Their results show that the 6-DOF solver is suitable for simulating the motion of planing hull under head wave conditions. In 2017, De Marco et al [10] conducted a seakeeping analysis of a stepped planing craft. A hydrodynamic experiment of the single-step hull model, as a new systematic series, was carried out, and the corresponding tests were based on numerical simulation, with an overset and morphing grid.…”

Section: Introductionmentioning

confidence: 99%

Seakeeping Analysis of Planing Craft under Large Wave Height

Zhuang

2020

Water

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The purpose of this paper is to conduct a seakeeping analysis of planing craft under regular wave with large wave height. To obtain a reliable numerical method to simulate the sailing of planing craft in waves, Reynolds-averaged Navier–Stokes (RANS) solver and overset method are adopted. The motion response and resistance of the planing craft USV01 in regular wave were numerical predicted and compared with the corresponding seakeeping experimental tests. The results show that the numerical method has high accuracy. For further study, a new planing craft whose name is improved vessel is selected for simulation, the low steaming of the USV01 and improved vessel in regular wave with large wave height was simulated, and the seakeeping of the two vessels was studied. The analysis about the influence of wave length on the motion response and navigation configurations of the improved vessel under regular wave was carried out. Meanwhile, the influence of speed on different navigation configurations of the improved vessel was also analyzed. The improved vessel can provide better seakeeping, and a reduction in the speed of the vessel will benefit its seakeeping, irrespective of its navigation configuration.

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Experimental and numerical hydrodynamic analysis of a stepped planing hull

Cited by 130 publications

References 18 publications

A Validation of Symmetric 2D + T Model Based on Single-Stepped Planing Hull Towing Tank Tests

A Validation of Symmetric 2D + T Model Based on Single-Stepped Planing Hull Towing Tank Tests

Grid Type Impact on the Results of the Volume of Fluid Method in the Free Surface Flow Calculations Around Ship Hull

Seakeeping Analysis of Planing Craft under Large Wave Height

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