Comparison of Propeller Type B-Series and Au-Outline Gawn Series for Improving on Submarine Propulsion Performance Using CFD

Chrismianto, Deddy; Zakki, Ahmad Fauzan; Arswendo, Berlian; Abar, Insanu Abdilla Cendikia

doi:10.34218/ijaret.10.2.2019.061

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…This is due to their indirect contribution to the vessel's functions, influenced by the dynamics of fishing gear [8], as well as for catamaran-style fishing vessels [9]. The application of these technologies is also viable for submarines, where the specialized criteria of generating substantial thrust in a noiseless manner are paramount [10]. Similarly, the benefits extend to niche applications like glass-bottom tourism boats [11].…”

Section: Introductionmentioning

confidence: 99%

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Berlian Arswendo Adietya,

Husein Syahab,

Mahendra Indiaryanto

et al. 2024

CFDL

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Numerical analysis of fins effect on propeller performance was conducted, specifically using the B4-70 and Ka4-70 propellers. The study investigated different types of fins, including bare fins and PBCF (Propeller Boss Cap Fins) using computational fluid dynamics (CFD) simulations. The explicit algebraic stress model (EASM) based on Reynolds-Averaged Navier-Stokes (RANS) equations and turbulence modeling was employed to determine the optimal results. The main objective of this research was to enhance energy efficiency in ships by examining various open propeller configurations. The CFD simulation results for open propellers B4-70 and Ka4-70, with the addition of boss cap fins, revealed interesting phenomena. When the open propellers B4-70 and Ka4-70 were equipped with PBCF, they would experience an increase in efficiency (η0). This was because the performance of the fins functioned optimally when the advance ratio (J) is high, as evident from the high velocity values. Thus, with higher velocity and lower pressure in the boss cap region at high J values, there was an elevation in thrust force due to the reduction of hub vortex. In the case of open propeller B4-70 with added PBCF, there was an increase in the efficiency value (η0) ranging from 3% to 5% when J varied from 0 to 0.7. Similarly, for propeller Ka4-70 with the addition of PBCF, there was an increase in the efficiency value (η0) ranging from 1% to 3% when J varied from 0 to 0.7. Notably, the use of an Energy-Saving Device (ESD) in the form of PBCF can increase the efficiency of ship propeller, as reported in this paper. Consequently, these findings affirmed the reliability of the overall calculations using the CFD approach.

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Section: Introductionmentioning

confidence: 99%

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Berlian Arswendo Adietya,

Husein Syahab,

Mahendra Indiaryanto

et al. 2024

CFDL

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“…Despite their different shapes, they all intend to support the ship's activities in operating purse seines. Indonesian fishing boats, including purse-seiner, are made of wood, have a relatively small size, under 25 m long, and are generally planned and made traditionally (Mulyanto et al 2019), with an easier and simpler manufacturing procedure than steel vessels (Liu et al 2019;Chrismianto et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Hull Redesign and Its Effect on the Resistance of Manado Prototype Small Purse Seiner

Pamikiran,

Manoppo,

Dien

et al. 2024

Jurnal Marfis

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This research aims to determine the effect of redesigning the hull of a small purse seine ship on its motion resistance. The research was carried out using a small purse seine ship prototype in Manado by changing the length-breath-depth ratio based on the main dimensions of the ship, resulting in three new hull designs coded K-0 (prototype), K-1, K-2, and K- 3. Maxsurf modeler and Maxsurf resistance were used to run a simulation set of three loading conditions (light, half, full) and speed (low, medium, high). The research results show that changes in ship hull design affect the resistance and thrust of the ship. There is a difference in resistance between the ship with the redesigned hull and the prototype, where the smallest difference is shown by K-3. In addition to changes in hull design, changes in ship loading conditions, Froude number, and ship speed lead to increases in ship resistance and thrust. Based on the average allowance (sea margin or service margin) in shipping lanes, the need for propulsion power and the number of propulsion power vessels K-0 (prototype) and K-3 are still better than K-1 and K-2. Keywords: purse-seiner, resistance, speed, propulsion

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“…These enhancements are beneficial for the performance of commercial ships or traditional fishing vessels, especially during fishing activities, as they indirectly aid the vessel's operations due to the influence of the fishing gear [9] and catamaran type fish vessel [10]. It is also possible to use these technologies on submarines because submarine propellers require specific criteria to provide a larger amount of thrust while operating silently [11] and glass bottom tourism boat [12]. Several studies on ducts, such as the influence of a Pre-Duct in a Ship on Propeller-Hull, have explained that the addition of a pre-duct tends to increase the hull's efficiency while decreasing the propeller's efficiency in open water [13].…”

Section: Introductionmentioning

confidence: 99%

Characteristics Investigations of Ducted Ka4-70 Series Propeller with Boss Cap Fins Using Numerical and Experimental Method

Berlian Arswendo Adietya,

I Ketut Aria Pria Utama,

Wasis Dwi Aryawan

et al. 2023

CFDL

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Unconventional system that are generally adopted for ship propulsion are Ducted Propellers. These devices have recently been studied with medium-fidelity computational fluid dynamics code (based on the potential flow hypothesis) with promising results. Numerical and experimental comparison of ducted propeller with PBCF, case studies with Propeller Ka4-70 used combination ducted and PBCF Divergent. The study was done numerically using computational fluid dynamics (CFD) approach. The solver is based on the Reynolds-Averaged Navier-Stokes (RANS) solutions and turbulence modelling explicit algebraic stress model (EASM). The test data was obtained from CFD simulations consisting of the open propeller and combination Nozzle plus PBCF, but the experiment was done to Nozzle and PBCF only. All measurements were carried out from J = 0 to J = 1.0 with speeds from 0 m/s to 2.445 m/s. The results of the comparative investigation cases between numerical and experiment analysis from Ka4-70 propellers with Nozzle 19A and PBCF Divergent appears that between CFD and experiments, several phenomena are seen. (i) the Ka4-70 propeller without Nozzle 19A and PBCF divergent experienced large pressure at low-speed J = 0.1 to high-speed J = 0.7, but Ka4-70 propeller with Nozzle and PBCF divergent reach highest pressure at J = 0.1 to J = 0.5; (ii) the Ka4-70 propeller without 19A nozzle and PBCF divergent increases the flow velocity at the boss cap fins but does not increase the axial induce velocity, while Ka4-70 propeller using nozzle and PBCF divergent increases the axial induce velocity of the blade, but does not increase the flow velocity of the boss cap fins; (iii) Ka4-70 propeller without Nozzle and PBCF value increase of propeller η0 to 12% when ESD added in the form of Nozzle and PBCF when J is high, from J = 0.7 to J = 1.0. ; (iv) Ka4-70 propellers with Nozzle 19A and PBCF Divergent has very similar η0 from J=0 to J=1.0. CFD approach are still appropriate to be relied upon for the overall simulation.

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Comparison of Propeller Type B-Series and Au-Outline Gawn Series for Improving on Submarine Propulsion Performance Using CFD

Cited by 4 publications

References 3 publications

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Influence Evaluation of Open Propellers with Boss Cap Fins: Case Studies on Types B4-70 and Ka4-70

Hull Redesign and Its Effect on the Resistance of Manado Prototype Small Purse Seiner

Characteristics Investigations of Ducted Ka4-70 Series Propeller with Boss Cap Fins Using Numerical and Experimental Method

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