Numerical Assessment of the Resistance of a Solar Catamaran in Shallow Water

Martić, Ivana; Degiuli, Nastia; Borčić, Kornelija; Grlj, Carlo Giorgio

doi:10.3390/jmse11091706

Cited by 4 publications

(3 citation statements)

References 34 publications

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“…The results indicated a significant increase in the total resistance and sinking of the catamaran as the depth decreased at the operational speed of 5.5 knots [20]. A reduction in speed by 1.5 knots led to a notable decrease in both the total resistance and sinking [20].…”

Section: Of 17mentioning

confidence: 91%

“…The optimization strategy focused on reducing the resistance by adjusting the location of the LCG through modifications of dimensional parameters and displacement. On the other hand, Martić et al assessed the impact of shallow water on the total resistance of a solar catamaran through numerical simulations at different depths and speeds [20]. The results indicated a significant increase in the total resistance and sinking of the catamaran as the depth decreased at the operational speed of 5.5 knots [20].…”

Section: Of 17mentioning

confidence: 99%

“…On the other hand, Martić et al assessed the impact of shallow water on the total resistance of a solar catamaran through numerical simulations at different depths and speeds [20]. The results indicated a significant increase in the total resistance and sinking of the catamaran as the depth decreased at the operational speed of 5.5 knots [20]. A reduction in speed by 1.5 knots led to a notable decrease in both the total resistance and sinking [20].…”

Section: Of 17mentioning

confidence: 99%

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Effect of Speed and Hull Length on the Hydrodynamic Performance of a Semi-Planing Hull of a Shallow-Draft Watercraft

Leal-Ruiz,

Camargo-Díaz,

Paipa-Sanabria

et al. 2023

JMSE

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Hydrodynamic performance is an essential factor in the design of a watercraft, and the navigation scenario determines the complexity of its operation. This study aims to identify the effect of speed and length on the hydrodynamic behavior of a semi-planing watercraft in shallow waters. A computational fluid dynamics tool was employed to predict the trim, heave, and resistance parameters of two different hulls: a base hull and a craft with an increased hull length. The two hulls had similar hydrodynamic characteristics. The effects of speed and hull length on these predicted parameters obtained for the two hulls were compared. The results showed a low resistance uncertainty and a reduction in dynamic trim for longer hull lengths. These findings highlight the importance of considering balance and dynamic trim in designing shallow-draft watercrafts to ensure an optimal performance in specific conditions, such as rivers with depth restrictions.

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Section: Of 17mentioning

confidence: 91%

Section: Of 17mentioning

confidence: 99%

Section: Of 17mentioning

confidence: 99%

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Effect of Speed and Hull Length on the Hydrodynamic Performance of a Semi-Planing Hull of a Shallow-Draft Watercraft

Leal-Ruiz,

Camargo-Díaz,

Paipa-Sanabria

et al. 2023

JMSE

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Numerically Investigating the Effect of Trim on the Resistance of a Container Ship in Confined and Shallow Water

Martić,

Anušić,

Degiuli

et al. 2024

Applied Sciences

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One of the promising strategies for the improvement of the resistance characteristics and energy efficiency of a ship is trim optimization. Most of the studies conducted so far regarding trim optimization deal with unrestricted water. The effect of trim on the total resistance and its components for the KRISO Container Ship model in confined and shallow water is investigated using computational fluid dynamics. Numerical simulations of resistance tests with and without the free surface effects using two turbulence models are carried out for even keel and four trims in restricted water. A verification study is conducted for the total resistance, sinkage, and trim in terms of grid resolutions and time steps to assess the numerical uncertainty. The numerical results are validated against the experimental ones available in the literature. Performing the double body simulations enabled the analysis of the effect of trim on the resistance components. The numerical results pointed out that by adjusting the trim a reduction in the total resistance in confined and shallow water can be obtained.

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Ship Speed Optimization Method in Canal Environments Considering Waiting Times for Crossing Locks

Xie,

Xu,

Zhang

et al. 2024

JMSE

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The shipping industry faces a pressing challenge with carbon emissions, prompting a focus on speed optimization for energy conservation and emission reduction. While much research has centered on optimizing speeds in oceans and rivers, canals have received less attention, despite their unique challenges of narrow waterways and busy locks. This study fills this gap by establishing a fuel consumption prediction model integrating key environmental factors such as water depth, width, and flow velocity. Drawing upon established methodologies in speed optimization, this study augments these models with waiting time limits for each canal segment. To validate the efficacy of the model, three representative ships are selected as case studies. The findings reveal a high predictive capability of the fuel consumption model, as evidenced by R2 values exceeding 0.97 across all cases. Notably, the optimization approach yields a fuel consumption reduction ranging from 4% to 5% for short waiting times. Furthermore, compared to conventional methods, the proposed optimization strategy achieves an 8.19% enhancement in fuel consumption and carbon emission reduction for long waiting times, culminating in an overall optimization rate of 11.54%. These results underscore the significance of employing the proposed speed optimization methodology, particularly during peak periods of canal congestion.

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Numerical Assessment of the Resistance of a Solar Catamaran in Shallow Water

Cited by 4 publications

References 34 publications

Effect of Speed and Hull Length on the Hydrodynamic Performance of a Semi-Planing Hull of a Shallow-Draft Watercraft

Effect of Speed and Hull Length on the Hydrodynamic Performance of a Semi-Planing Hull of a Shallow-Draft Watercraft

Numerically Investigating the Effect of Trim on the Resistance of a Container Ship in Confined and Shallow Water

Ship Speed Optimization Method in Canal Environments Considering Waiting Times for Crossing Locks

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