Numerical simulation of resistance performance according to surface roughness in container ships

Seok, Jun; Park, Jong-Chun

doi:10.1016/j.ijnaoe.2019.05.003

Cited by 18 publications

(5 citation statements)

References 8 publications

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“…Experimental approaches are mainly based on basin experiments using a plate ([4]- [5]). In recent years, there have been an increasing number of studies on ships using numerical simulation methods ([6]- [15]).…”

Section: Introductionmentioning

confidence: 99%

A Fundamental Study on Measurement of Hull Roughness

Seok

Park

2020

brod

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In this study, an investigation on the hull roughness measurement of a new ship, a 160m class car ferry, was performed. The hull roughness measurement was conducted in the ferry's pre-coated state before launching. For measurement, the TQC manual and ITTC recommendations were considered, and measurements were made in a total of 230 zones below waterline of the ship. Accordingly, the average hull roughness of the car ferry was 81 , which is relatively low compared to 150 , the hull roughness of a new ship proposed by the ITTC. In addition, the measurement uncertainty was calculated using the ISO guidelines, and the effect of the number of zones on the hull roughness measurement was examined. Using the measured average hull roughness, we estimated the resistance performance at the design speed of the ship. Accordingly, it was confirmed that the total resistance of the new ship was reduced by approximately 2% owing to a decrease in its frictional resistance increase.

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Section: Introductionmentioning

confidence: 99%

A Fundamental Study on Measurement of Hull Roughness

Seok

Park

2020

brod

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“…Townsin (1985) made an effort to address this issue by enhancing ITTC-78 and putting forward a strategy for taking the Reynolds number into account. [32]. Using the ITTC approach, a ship's total resistance coefficient is specified as follows:…”

Section: Methodsmentioning

confidence: 99%

Ehp Value of Mini LNG Ship With Form Factor From Prohaska and Irls Method Using Ship Resistance Testing Data

Widodo,

Santoso,

Erwandi

et al. 2023

Jurnal Teknologi

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The ship model test was believed to be one of the effective methods for figuring out the boundaries and reliability of the ship's horsepower. The ship's form factor determines a full-scale ship's effective horsepower. Determination of the form factor value can be done experimentally through the Prohaska method. The new method proposed in this study is employed the regression Iteratively Reweighted Least Squares (IRLS) method by utilizing the principle dimension of the ship, such as LWL, B, CB, CP, CM, WSA, T, ∆. etc. The Indonesian Hydrodynamics Laboratory has a database of ships with various principle dimensions which have undergone the towing model test. Through the database, the form factor can be predicted with the IRLS method. The method is then verified and validated with the Prohaska method. The result shows a good agreement with the Prohaska method. The obtained results from the IRLS method also show that the EHP & Resistance calculations are identical with old fashion Prohaska methods. The residual bias factor established by the IRLS method was verified in comparison to the value of the form factor generated by the Prohaska method. Comparison between the two methods results in a small error.

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“…Kapal memiliki karateristik dimana tahanan yang ditimbulkan akan menghasilkan gesekan yang menahan proses lajunya kapal di permukaan air laut [2,3]. Kapal barang atau general cargo dan kelas kapal kontainer umumnya memiliki hambatan yang cukup besar dikarenakan desain lambung kapal yang dirancang untuk lebih dalam sehingga membuat sarat kapal tercelup lebih dalam dari permukaan air laut [4]. Semakin dalam bagian kapal yang tercelup maka dalam perencanaan sistem propulsi pun juga perlu diperhatikan termasuk didalamnya adalah perencanaan daya mesin kapal [5,6].…”

Section: Pendahuluanunclassified

Analisis Perhitungan Daya Main Engine Container Ship 100 teus Jarak Pelayaran 556 Nautical mill

Yusim,

Khristyson

2023

j.rekayasa.mesin.

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Dalam menunjang performa kapal ketika beroparsi maka diperlukan suatu sistem propulsi yang tepat. Kapal memiliki karateristik dimana tahanan yang ditimbulkan akan menghasilkan gesekan yang menahan proses lajunya kapal di permukaan air laut. Perlunya perbandingan dan pembuktian adanya korelasi antara perhitungan tahanan total dengan melibatkan tahanan gesek terhadap air, udara dalam suatu perencanaan kapal terhadap perencanaan sistem propulsi dari kapal. Tujuan penelitian melakukan analisa terhadap perhitungan hambatan total, daya serta spesifikasi mesin induk kapal kontainer 100 teus jarak pelayaran 556 nautical mill. Pendekatan perhitungan hambatan total kapal dapat disajikan dengan menggunakan metode Guldamer-Harvard. Hasil Analisa menunjukan untuk tahanan total 62,31 KN mendapatkan spesifikasi mesin model 12 cylinder diesel engine dengan 1656 Hp / 1900 rpm , percobaan sea trial pada kapal kontainer 100 Teus didapatkan kelajuan kapal 11,2 Knot untuk beban mesin 100 %.

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Numerical simulation of resistance performance according to surface roughness in container ships

Cited by 18 publications

References 8 publications

A Fundamental Study on Measurement of Hull Roughness

A Fundamental Study on Measurement of Hull Roughness

Ehp Value of Mini LNG Ship With Form Factor From Prohaska and Irls Method Using Ship Resistance Testing Data

Analisis Perhitungan Daya Main Engine Container Ship 100 teus Jarak Pelayaran 556 Nautical mill

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