Hydrodynamic Analysis of Trimaran Vessels

Javanmardi, Mohammadreza; Jahanbakhsh, Ebrahim; Seif, Mohammad Saeed; Salarieh, Hassan

doi:10.2478/v10012-007-0046-5

Cited by 17 publications

(5 citation statements)

References 12 publications

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“…In this study, resistance characteristics of a trimaran hull form with different arrangements were investigated to verify the theoretical prediction by comparing towing test results. The CFD method was utilized by Javanmardi et al (2008) to analyze the hydrodynamic performance of the trimaran hull form with small-sized outriggers to determine optimum outrigger positions for minimum wave resistance performance. They also considered the wave interactions between the center-hull and outriggers to predict total wave-making resistance.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation into the Effect of the Axe-Bow on the Drag Reduction of a Trimaran Configuration

Utama¹,

Sutiyo²,

Suastika³

2021

IJTech

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Using the axe-bow to reduce total ship resistance on monohull ships has been well-known. This advantage has been further applied to a trimaran configuration together with its space-to-length (S/L) ratio differences. The investigation was carried out experimentally using an ITTC standard towing tank and numerically using computational fluid dynamics (CFD) analysis. The base model for the study uses an NPL 4a both for the mainhull and sidehulls of the trimaran, and later the mainhull is modified by attaching a front bulb known as an axe-bow. The resistance analysis of the trimaran was conducted with and without an axe-bow on the mainhull together with S/L ratios of S/L = 0.3 and S/L = 0.4 and at various Froude (Fr) numbers: 0.15, 0.2, 0.25, 0.3, 0.4, and 0.5. The results showed that the monohull with an axe-bow had a smaller drag than that without an axebow of an order up to 11.5%, whereas in the trimaran form, the reduction of drag was up to 8.4%. This indicates a positive influence of using the axe-bow on the total resistance of the trimaran configuration. Both experimental and CFD methods showed positive agreement of the order 2.7% discrepancy for the monohull form and a 3.4% discrepancy for the trimaran configuration.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation into the Effect of the Axe-Bow on the Drag Reduction of a Trimaran Configuration

Utama¹,

Sutiyo²,

Suastika³

2021

IJTech

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“…Sejalan dengan perkembangan teknologi desain kapal yang berkembang sangat pesat, dalam tiga puluh tahun terakhir ini terjadi banyak peningkatan permintaan kapal, baik kapal monohull, kapal dua badan (catamaran) maupun kapal tiga badan (trimaran). aplikasi untuk kapal penumpang (feri), fasilitas olah raga (sporting craft) dan kapal penelitian oseanografi serta kapal pukat [1]. Ketiga jenis kapal diatas masing-masing memiliki kelebihan dan kekurangan yang perlu diperhatikan saat akan kita gunakan.…”

Section: Pendahuluanunclassified

Perbandingan Kapal Monohull, Catamaran, Trimaran Berdasarkan Tinjauan Operasional Penggunaan Bahan Bakar

Tupan

Luhulima

2021

ale

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In general, fishing fleets operating in Maluku waters and managed by local entrepreneurs consist of monohull and trimaran fishing vessels with outriggers. Monohull fishing vessels have limited deck space and poor transverse stability, while trimaran-type vessels have better deck space and transverse stability than monohull vessels, but because they are still in the form of outriggers, the space is limited. This study aims to examine the development of the trimaran fishing vessel in terms of energy requirements, safety, and comfort of the crew during fishing operations. The initial stage of this research begins with data analysis and the basic size of monohull fishing vessels operating in Maluku waters, from this data the shape of the trimaran hull is designed. Calculation of resistance using CFD, then analyzed the calculation of resistance and stability, safety, and comfort of the ship using Maxsurf. The drag Trimaran is 8.86% smaller than a monohull and 3.25% smaller than a catamaran. Energy Usage (EHP) is proven by trimaran ships more than other ship modes. The average trimaran period is 10.5 seconds which meets IMO standards and is declared operationally good.

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“…As shown in Figure V. At the point of sailing performance of trimaran, researches show that [13][14][15], what be beneficial to reduce the resistance of the side hull's vertical layout is: when in the medium and low speed, side hull should be arranged slightly after the center of the main hull; when in high speed, side hull should be arranged in the rear part of the main hull (almost in the same level of rear-end). Referring to the existing wind power operation and maintenance trimaran in wind farm, the ratio of the difference between length center of the main hull and the length center of the side hull to the length of the main hull Lm is 23.53%~29.62% [9].…”

Section: Relative Positional Parameters Of Main and Side Hullmentioning

confidence: 99%

The Research on Driving force and Elements of Main & Side Hulls of Amphibious Maintenance Trimarans in Wind Farm

Xie¹,

Zhou²,

Song³

et al. 2018

IJEAS

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This paper are based on requirements of maintenance on intertidal wind farm in China, Through demonstration, comparison and analysis, it can be determined that the propulsion system on water adopts regular propeller, driving mode on land adopts wheeled mode. For power transmission, mechanical transmission is used while sailing on water and hydraulic transmission is used while driving on land, therefore an affordable, feasible as well as reasonable single-motor propelled system can be determined. Numerical simulation is used to analyze and calculate hydrostatic resistance, pitch and heaving of several amphibious maintenance trimarans which adapt different main, side hull arrangements in regular wave and determine relative position and scheme of main, side hull of amphibious maintenance trimaran. The research results in this paper will provide references for the design and research of amphibious maintenance ship for offshore intertidal wind farms.

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Hydrodynamic Analysis of Trimaran Vessels

Abstract: ABSTRACT

Cited by 17 publications

References 12 publications

Experimental and Numerical Investigation into the Effect of the Axe-Bow on the Drag Reduction of a Trimaran Configuration

Experimental and Numerical Investigation into the Effect of the Axe-Bow on the Drag Reduction of a Trimaran Configuration

Perbandingan Kapal Monohull, Catamaran, Trimaran Berdasarkan Tinjauan Operasional Penggunaan Bahan Bakar

The Research on Driving force and Elements of Main & Side Hulls of Amphibious Maintenance Trimarans in Wind Farm

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