Self-Propulsion Simulation of a Tanker Hull

Pacuraru, Florin; Lungu, Adrian; Marcu, Oana

doi:10.1063/1.3636699

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…For the case studies (1) "ship resistance" and (3) "selfpropulsion", the computations were performed for the design draft T = 0.4125 m, corresponding to the hull displacement volume = 2.7870 m 3 , and for Froude number Fr = 0.142 and Reynolds number Re = 7.46.10 6 .…”

Section: Test Case Conditionsmentioning

confidence: 99%

“…Some useful results using the RANS method for simulation of propeller-hull interaction have been already achieved. Villa et al [2], Pacuraru et al [3] and Win et al [4] used this method in combination with the actuator disk method, instead of the actual propeller, to perform the self-propulsion simulation. That approach allowed the authors to avoid complexities associated with moving meshes and to achieve, as a result, shorter run times.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Prediction of Propeller-Hull Interaction Characteristics Using RANS Method

Ngoc

Luu

Nguyen

et al. 2019

Polish Maritime Research

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The paper presents the results of computational evaluation of the hull-propeller interaction coefficients, also referred to propulsive coefficients, based on the unsteady RANS flow model. To obtain the propulsive coefficients, the ship resistance, the open-water characteristics of the propeller, and the flow past the hull with working propeller were computed. For numerical evaluation of propeller open-water characteristics, the rotating reference frame approach was used, while for self-propulsion simulation, the rigid body motion method was applied. The rotating propeller was modelled with the sliding mesh technique. The dynamic sinkage and trim of the vessel were considered. The free surface effects were included by employing the volume of fluid method (VOF) for multi-phase flows. The self-propulsion point was obtained by performing two runs at constant speed with different revolutions. The well-known Japan Bulk Carrier (JBC) test cases were used to verify and validate the accuracy of the case studies. The solver used in the study was the commercial package Star-CCM+ from SIEMENS.

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Section: Test Case Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Prediction of Propeller-Hull Interaction Characteristics Using RANS Method

Ngoc

Luu

Nguyen

et al. 2019

Polish Maritime Research

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“…Since it also represents the main source of vibrations at board, several experimental [1,2] and theoretical studies [3][4][5] were carried out for establishing a reliable and stable method for its optimal design. In terms of the theoretical studies, both potential and viscous-based numerical approaches have been proposed over time to solve the problem for the calm water and in real sea navigation cases [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Energy-Saving Devices in Ship Propulsion: Effects of Nozzles Placed in Front of Propellers

Lungu

2021

JMSE

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The hydrodynamic effect exerted by a nozzle placed in front of a KP505 propeller on the propulsive performances is studied by using extensive numerical simulations. The influence of a NACA 0015 nozzle with a chord length of 0.3 of the propeller diameter, D, mounted at 0.2 D in front of the propeller plane is studied for a various range of relevant nozzle diameters and different angles of attack. A detached eddy simulation (DES)-based hybrid technique implemented on the ISIS-CFD finite volume solver of the Numeca’s FineTM/Marine environment is proposed to fit the purpose. Systematically conducted simulations have proven that the net thrust reflecting the overall drag, which includes the nozzle, depends on the duct size. The duct presence determines two regions of the inflow into the propeller. One is the inner region of the nozzle where the high-speed flow exists because of the contraction of the duct. The other is the outer region of the nozzle where the flow decelerates due to the duct wake. Lower- and higher-pressure coefficients on the suction and pressure sides, cover a significantly wider area than those of the case without the nozzle, leading therefore to greater thrust and torque. The existence of a critical attack angle for which the magnitude of the relative axial force becomes maximum for the smallest nozzle diameter has been noticed.

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“…A special class between the LES and the RANS approaches are the detached eddy simulation (DES) and delayed detached eddy simulation (DDES) methods, which combine the advantages of the two [14,15]. The main advantage of the viscous flow solution method is the possibility of a complete description of the flow features for a wide spectrum of applications, ranging from simple propeller analyses at both model and full scales [16][17][18] to self-propulsion in waves [19] or during maneuvers [20]. They can be relatively easy to apply for various problems such as ventilation of the propellers [21][22][23], oblique flow [24][25][26], wake analysis [27][28][29] and cavitation [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

A DES-SST Based Assessment of Hydrodynamic Performances of the Wetted and Cavitating PPTC Propeller

Lungu

2020

JMSE

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The paper describes an investigation of the hydrodynamic performances of a five-bladed controllable pitch propeller, whose geometry was provided by Schiffbau-Versuchsanstalt (SVA) Potsdam GmbH Model Basin. Both cavitating and non-cavitating regimes are numerically simulated for different advance ratio coefficients. The numerical approach is based on a finite volume approach in which closure to the turbulence is achieved through detached eddy simulation (DES). Propeller open water (POW) characteristics are computed, and the numerical solutions are validated through extensive comparisons with experimental data. In addition, the bi-phasic flow for the cavitating regime is simulated, for which comparisons with the cavitation sketches are performed to check the ability of the solver to estimate the cavitation extent. Grid convergence tests are performed for both working regimes together with validation and verification checks, not only to size the level of the numerical errors, but also to prove the robustness of the chosen numerical approach. Finally, a set of final remarks will conclude the present research.

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Self-Propulsion Simulation of a Tanker Hull

Cited by 11 publications

References 2 publications

Numerical Prediction of Propeller-Hull Interaction Characteristics Using RANS Method

Numerical Prediction of Propeller-Hull Interaction Characteristics Using RANS Method

Energy-Saving Devices in Ship Propulsion: Effects of Nozzles Placed in Front of Propellers

A DES-SST Based Assessment of Hydrodynamic Performances of the Wetted and Cavitating PPTC Propeller

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