Improved body force propulsion model for ship propeller simulation

Feng, Dan; Yu, Jilin; He, Ran; Zhang, Zhiguo; Wang, Xianzhou

doi:10.1016/j.apor.2020.102328

Cited by 36 publications

(11 citation statements)

References 22 publications

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“…Two boundaries are developed on the CFD modeling, an inner boundary, and an outer boundary. The propeller is inside the inner boundary, and the inner boundary is inside the outer boundary [15,16]. The inner boundary is performed as a rotating boundary, and the outer boundary is performed as a fixed boundary.…”

Section: Numerical Studymentioning

confidence: 99%

Flow Separation Evaluation on Tubercle Ship Propeller

Arifin

Felayati

Muhammad

2022

CFDL

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Propeller design for ship propulsion is important based on efficiency and power output. Advanced propeller design has been proposed in recent research, such as the tubercle propeller. The modified propeller on the leading edge with a tubercle-like design has been improved. Moreover, some evaluation has been studied on the design and performance. In the present study, the tubercle design on the leading edge is evaluated, which focuses on the flow separation effect developed by the tubercle shape. A computational fluid dynamic (CFD) model is compared between the normal and tubercle leading edge. The flow total pressure, Reynold number velocity, and power surface acoustic are evaluated. The flow separation is generated in the leading edge due to the tubercle shape. Moreover, the tubercle shape reduces the total pressure at the propeller blade, especially at the edges. It also increases the Reynold number velocity at the surface due to the flow separation. However, the flow separation decreased the power acoustic surface, which means it lost some power on the propeller.

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Section: Numerical Studymentioning

confidence: 99%

Flow Separation Evaluation on Tubercle Ship Propeller

Arifin

Felayati

Muhammad

2022

CFDL

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“…For ships with conventional propellers, there have been many studies on propeller rotation models in recent years, mainly including the discretized propeller model and the body-force model based on the open water curve of propeller [28][29][30][31][32][33]. However, for a waterjet propulsion system with complex geometric structure, it is necessary to consider the comprehensive effect of the flow channel, impeller and guide vane in the momentum control volume, not just the open water curve of the impeller.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on Self-Propulsion of a Waterjet-Propelled Ship with Different Propulsion Models

Zhang

Yang

2022

Applied Sciences

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The hydrodynamics of the waterjet-propelled ship is a challenging issue due to the sophistication of waterjet system geometry as well as waterjet–hull interaction. In current study, three different propulsion models, namely, multiple reference frame (MRF) model, sliding mesh model and body-force model, are utilized to simulate the self-propulsion of a waterjet-propelled ship model. A body-force model based on a User-Defined Function (UDF) on the ANSYS Fluent platform is proposed. The computational cost, wave pattern, jet stream surface, and self-propelled hull resistance of the MRF model and body-force model are compared. Comprehensive comparisons of the internal ingested flow field of the control volume are made, especially at the capture area and nozzle section, with the two different models. In addition, the resistance increment fraction and jet system thrust deduction fraction with the two different models are investigated. Lastly, the flow field with the steady MRF model, the body-force model (RANS) and the transient sliding mesh model (URANS) are compared.

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“…Sedangkan pada perhitungan hidrodinamika Kinerja hidrodinamik dari baling-baling tandem bisa jadi dievaluasi dengan beberapa koefisien non-dimensi, yaitu koefisien dorong KT, koefisien torsi KQ dan efisiensi ƞ0. 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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“…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

Suharto

Sulaiman

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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Improved body force propulsion model for ship propeller simulation

Cited by 36 publications

References 22 publications

Flow Separation Evaluation on Tubercle Ship Propeller

Flow Separation Evaluation on Tubercle Ship Propeller

Numerical Analysis on Self-Propulsion of a Waterjet-Propelled Ship with Different Propulsion Models

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

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