The influences of diversity hull shapes and outriggers arrangement in pentamaran systems

Sulistyawati, Wiwin; Yanuar, Yanuar; Pamitran, Agus Sunjarianto

doi:10.1016/j.egyr.2019.11.124

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The findings show optimal conditions for this catamaran's hull design to obtain favorable destructive interference for the hull resistance, namely at 0.45 clearance in Froude Number 0.7. Similar results were obtained by Sulistyawati et al [30], where the wave interference value increased until it reached the maximum value in the Froude Number 0.5 and subsequently decreased the wave interference value. The decrease in the value of wave interference also occurs as the distance between the hulls increases.…”

Section: Interference Factor Analysissupporting

confidence: 89%

Biomimetics Design Optimization and Drag Reduction Analysis for Indonesia N219 Seaplanes Catamaran Float

Utomo¹,

Gunawan²,

Yanuar³

2021

Processes

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Design optimization on the Indonesia N219 seaplane catamaran is necessary to provide better service to rural islands of Indonesia. This research aims at decreasing drag using a design based on biomimicry by imitating the hydrodynamic characteristics of sailfish (Istiophorus platypterus) for pontoon floats. The design is then validated using a numerical fluid test using ANSYS Fluent to see the reduction in drag due to the change from a conventional or Wipeline® 13000 design to a biomimetics adaptation design. Next, further optimization was carried out based on the adaptation design based on trim tests, clearance tests, and deadrise angle dimensions suitable for biomimicry designs at Froude number speeds of 0.4 to 0.7. The design results with the adaptation of biomimicry show that a change in the design with this optimization affects a drag reduction that reaches 30% of the total drag generated by the conventional design.

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Section: Interference Factor Analysissupporting

confidence: 89%

Biomimetics Design Optimization and Drag Reduction Analysis for Indonesia N219 Seaplanes Catamaran Float

Utomo¹,

Gunawan²,

Yanuar³

2021

Processes

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“…This shape is very influential on the reduction of the multihull resistance component in addition to the selection of the proper outrigger configuration. According to [5]- [7], the slender hull shape on fast boats is the power to achieve minimum wave resistance. [8][9] stated that the optimum hull form manifests the minimum total resistance value: viscous and wave-making.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Analysis in Redesigning a Monohull Passenger Ship into a Catamaran

2021

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In line with technological developments, many studies have led to the factors that consider hull shape planning. Therefore, innovations in hull form planning are the primary basis for obtaining a hull that is considered efficient in reducing ship resistance and fuel consumption. This study aims to modify the design of a monohull and transform it into a catamaran while maintaining the total length and Displacement ratio. The ship model used is the Monohull passenger ship with a rounded shape and modified to become a catamaran with a chine shape. The hull chine symmetrical was determined by stagger to the length ratio of S/L 0.3. The hydrodynamic investigations and calculations of models using Computational Fluid Dynamic (CFD). Analysis hydrodynamic on both hulls carried out on the components of total resistance, viscous resistance, friction resistance, and wave resistance with variations of Froude number: 0.3: 0.5: 0.7: 0.9 and 1.2. From the results of the analysis, it is found that the calculation of the coefficient of resistance on the catamaran with the Chine hull is smaller than the monohull. Fn 0.7 at S/L 0.3, the catamaran produces a resistance coefficient that is more favorable than the other speeds.

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“…The Michell integral method or thin ship theory is considered a more straightforward and faster CFD method (Tuck and Lazauskas, 1998). Several studies (Yanuar and Sulistyawati, 2018;Sulistyawati et al, 2020a;Sulistyawati et al, 2020b;Sulistyawati et al, 2020c) used Michell theory to investigate the hydrodynamic characteristics of pentamarans and compared them with experiments. Any deviations from the Michell integral method were deemed necessary for development.…”

Section: Introductionmentioning

confidence: 99%

Achieving Drag Reduction with Hullform Improvement in Different Optimizing Methods

Sulistyawati¹,

Suranto²

2020

IJTech

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The influences of diversity hull shapes and outriggers arrangement in pentamaran systems

Cited by 6 publications

References 4 publications

Biomimetics Design Optimization and Drag Reduction Analysis for Indonesia N219 Seaplanes Catamaran Float

Biomimetics Design Optimization and Drag Reduction Analysis for Indonesia N219 Seaplanes Catamaran Float

Hydrodynamic Analysis in Redesigning a Monohull Passenger Ship into a Catamaran

Achieving Drag Reduction with Hullform Improvement in Different Optimizing Methods

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