Composite methodology to prevent ship propeller erosion

Marroig, Antoni Ignaci Llull; Mujal-Colilles, Anna; Castells, Marcel.la; Gironella, X.

doi:10.1016/j.oceaneng.2019.106751

Cited by 8 publications

(9 citation statements)

References 21 publications

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“…The present work uses the methodology applied in (Llull et al, 2020) in a case study, combining field data with a manoeuvre numerical simulator, to analyse the manoeuvre pattern and take the engine behaviour into consideration when studying the propeller-induced sediment scour at field. The field data consist of a series of annual bathymetric surveys performed at a specific harbour basin, where scour due to the manoeuvres of ferry ships was found.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vessel induced erosion through manoeuvre simulation and AIS data

Marroig¹,

Marimon²,

Sanabra³

et al. 2022

Maritime Transport Conference

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This manuscript presents an erosion induced by manoeuvring ships assessment methodology in harbour basins with low bed clearance conditions. From the evolution of the bottom morphology, obtained from bathymetric surveys performed by the Port Authority, AIS data is used to analyse the traffic patterns in the basin and to relate the particular ships manoeuvres with the bottom morphology evolution. This allows for the detection of ships causing higher erosion in the basin. The manoeuvre simulator yields the use of the engines and thrusters during the in-port manoeuvres. Afterwards, literature equations are used to perform a stability assessment of the bottom material allowing to compute the required size for a rock protection layer in the basin.

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Section: Introductionmentioning

confidence: 99%

Analysis of vessel induced erosion through manoeuvre simulation and AIS data

Marroig¹,

Marimon²,

Sanabra³

et al. 2022

Maritime Transport Conference

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“…Studi terbaru difokuskan pada pemanfaatan material komposit hibrida untuk baling-baling sebagai keserbagunaannya dalam mencapai hasil yang baik [16]. Kinerja fluida dengan pendekatan persamaan Navier Stokes dan persamaan kontinuitas, dapat ditulis dalam bentuk tensor Cartesian [4] sesuai dengan Pers. (1).…”

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“…Pada saat ini studi, formula standar ITTC (International Towing Tank Conference) [6], ditentukan dengan menggunakan pendekatan Pers. (3)(4)(5)(6).…”

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Analisa Teknis dan Ekonomis Perbaikan Controllable Pitch Propeller (CPP) Kapal KM. Dharma Kencana 3611 GRT

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2021

j.rekayasa.mesin.

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Baling-baling adalah bagian penting dari kapal. Stabilitas, usia pemakaian dan biaya pemakaian memiliki peran penting dalam pemilihan propeller. Pengaruh modifikasi juga ditinjau dari pengaruh penambahan ketebalan material propeller , pada sistem propulsi kapal yang berpengaruh terhadap performa propeller kapal serta hubunganya terhadap biaya reparasi perbaikan dari propeller. Tujuan penelitian ini, menganalisis desain propeller untuk direparasi dan biaya pereparasian propeller untuk mendapatkan performa terbaik dari mesin penggerak propeller sehingga merepresentasikan perbandingan kinerja dari propeller sebelum dan sesudah redesain. Simulasi perhitungan dengan metode finite elemen berbasis persamaan matematik yang menggambarkan karakteritik hidostatik propeller. Perencanaan dan pengunaan material sangat menentukan kekuatan dari proses perbaikan propeller memerlukan perencanaan yang tepat dari segi desain dan material yang akan digunakan. Metode perhitungan dengan numerik ini membantu dalam merekonstruksi desain awal propeller yang telah mengalami kerusakan. Saat putaran propeller pada rpm mesin yang optimum tegangan terjadi pada daun propeller. Hasil analisa menunjukan desain baru dapat memberikan nilai tambah rata-rata 0,24 % untuk nilai L/DT dan terhadap nilai nilai Da / Df memiliki nilai tambah rata-rata 0,46 % . Sementara biaya proses manufaktur dapat berkurang sebesar 38 % karena waktu produksi dan penyesuaian yang tidak terulang ulang kembali.

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“…Thus, knowledge of vessel tracks obtained through Automatic Identification System (AIS) data is useful to obtain daily manoeuvre patterns, traffic densities, transit duration performance and other decision support frameworks (Aarsaether & Moan, 2009;Pallotta et al, 2013;Silveira, Teixeira, & Soares, 2013;Greidanus, Alvarez, Eriksen, & Gammieri, 2016;Castells-Sanabra et al, 2017). Manoeuvre patterns obtained from AIS data can be further reproduced using a real-time full mission bridge simulator regardless of cost and time (Llull et al, 2020). Simulator studies offer accuracy and provide important information of the real F o r R e v i e w O n l y manoeuvre (Aarsaether and Moan, 2007).…”

mentioning

confidence: 99%

“…The berthing structure consists of a Ro-Ro berth, orientated NE, and the ship moored starboard side. The hole scoured by the main propellers of a ferry-type vessel with daily docking frequency (Llull et al, 2020) reached a total depth of 17.5 mbsl (metres below sea level), about 5-7 m deeper than the original quay seafloor. According to Mujal-Colilles et al (2017b), a ferry-type vessel with a daily docking frequency can reach an eroding rate of up to 1.2 m in three months.…”

mentioning

confidence: 99%

Alternative Manoeuvres to Reduce Ship Scour

Sanabra¹,

Mujal-Colilles²,

Marroig³

et al. 2020

J. Navigation

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Scouring and sedimentation effects on the seabed induced by ship propellers during ship manoeuvring near harbour structures affect both structure stability and ship manoeuvring capabilities. This contribution proposes solutions at an operational level using the automatic identification system (AIS) and a bridge simulator. Two new alternative manoeuvres were designed and tested on a bridge simulator to obtain expected maximum scour depth and the results were compared with that of real manoeuvres (i) using mooring lines, and (ii) with tug assistance. A total of 42 test scenarios combining several manoeuvres and meteorological conditions were reproduced. Results confirmed a clear reduction in erosion depth with the alternative manoeuvres, with total reduction when using the tugboat. The presented methodology can be very useful to port authorities to prevent the effects of ship erosion on harbour infrastructures.

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Composite methodology to prevent ship propeller erosion

Cited by 8 publications

References 21 publications

Analysis of vessel induced erosion through manoeuvre simulation and AIS data

Analysis of vessel induced erosion through manoeuvre simulation and AIS data

Analisa Teknis dan Ekonomis Perbaikan Controllable Pitch Propeller (CPP) Kapal KM. Dharma Kencana 3611 GRT

Alternative Manoeuvres to Reduce Ship Scour

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