Resistance Comparison of Flat Plate and Conventional Streamline Vessel

Baidowi, Achmad; Amiadji,; Musriyadi, Toni Bambang; Aried, I S; Ricinsi, F P

doi:10.1088/1755-1315/972/1/012054

Cited by 2 publications

(4 citation statements)

References 7 publications

(4 reference statements)

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“…From the construction aspect, the U hull has more strength than the V hull with the same structural size [42]. The V hull is easier to produce due to the lesser need for bending plates during production [43]. In terms of drag, both the U and V hulls have unique characteristics.…”

Section: Frmentioning

confidence: 99%

Investigating the Comparison of Ship Resistance Components Between U and v-Shaped Hulls

et al. 2023

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The selection of a hull design with minimal drag is an important effort to reduce emission levels on ships. Two different hull shapes, U and V hulls, have unique properties that affect their drag production, which has been studied extensively in the past. This study aims to re-examine the differences between the two hull types by conducting a simple analysis of drag prediction results using empirical and numerical slender body methods. Both hull models in this study have the same size and volume. The results indicate that the U hull has a higher frictional resistance ( ) than the V hull due to its wider wetted surface area ( ). Additionally, the viscous pressure resistance ( ) and form factor coefficient ( ) of the U hull are also higher than those of the V hull. However, for Froude numbers (Fr) above 0.245, the U hull has lower wave resistance ( ) than the V hull, whereas for Fr below 0.245, the U hull has higher . Overall, the U hull produces a higher total resistance ( ) than the V hull at low speeds, but a lower at high speeds. Therefore, the choice of hull shape for minimizing a ship's resistance is influenced by the desired speed of service. If Fr is low, below 0.24, a V-shaped hull is more suitable. However, if Fr is higher than 0.24, a U-shaped hull is more appropriate.

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Section: Frmentioning

confidence: 99%

Investigating the Comparison of Ship Resistance Components Between U and v-Shaped Hulls

et al. 2023

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“…Thus, the probability of slamming occurring must also meet these 2 (two) conditions. The first criterion is described as follows: (15) The second is the probability that the relative vertical speed of the bow is greater than the threshold slamming velocity: (16)…”

Section: Slamming Occurrencementioning

confidence: 99%

“…So, the probability of slamming is thus a combination of Equation (15) and Equation ( 16), which can be written as:…”

Section: Slamming Occurrencementioning

confidence: 99%

“…From a design aspect, for example, the U hull has a wider base area than the V hull [6], The wider bottom area can be maximized for cargo arrangement from bottom to top [1], while the wider top area can be maximized for the wider deck area. In terms of ship resistance, for a displacement ship type, the U hull will cause better wave resistance than the V hull for a certain Froude number [7][8], Reducing drag by choosing the correct hull shape can contribute to increased energy efficiency on ships [9,10], where it can help fight climate change [11][12][13], In terms of construction, the U hull has greater strength than that of the V hull with the same structural size [14], In terms of production, of course, the V hull is easier to produce because it does not need to bend the plate too much [15],…”

Section: Introductionmentioning

confidence: 99%

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Comparative Analysis of Slamming Phenomenon Prediction between U and V Hulls using Strip Theory Method

Hakim

Firdhaus

Ahadyanti

et al. 2022

Kapal

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Choosing the right hull shape is important in designing a ship, for example, a U-section or V-section of the hull. The hull shape will affect various aspects, such as design, resistance, seakeeping, structure and production. The ship hull must be properly designed so that it can operate according to the ship’s mission. From the seakeeping aspect of the ship's motion at sea, the difference in the hull shape will result in different motions and dynamic effects such as the slamming phenomenon. Based on the difference in the hull shape cases, this study analyzed the difference in the probability of slamming between the U and V hulls. Both hulls were made based on Formdata and almost all parameters were made the same. Parameters that cannot be forced to be the same are WSA (wetted surface area), (coefficient of waterplane area), and (distance of keel to buoyancy), where those parameters determine the difference in the results. The calculation of RAO (operator amplitude response) was obtained using the strip theory method which assisted by Maxsurf Motion software. The results became the input for the calculation of the slamming probability. The study results show that the U hull has a higher probability of slamming occurrence than that of the V hull, with the difference in values ranging from 20% to 35%. Therefore, the U hull will get more frequent slamming loads, so it has the potential to have a higher structural failure (fatigue) than that of the V hull.

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Resistance Comparison of Flat Plate and Conventional Streamline Vessel

Cited by 2 publications

References 7 publications

Investigating the Comparison of Ship Resistance Components Between U and v-Shaped Hulls

Investigating the Comparison of Ship Resistance Components Between U and v-Shaped Hulls

Comparative Analysis of Slamming Phenomenon Prediction between U and V Hulls using Strip Theory Method

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