Numerical Investigation of the Scale Effect on the Flow around a Ship Hull

Hänninen, Satu K.; Sehweighofer, Juha

doi:10.1179/str.2006.53.1.004

Cited by 9 publications

(10 citation statements)

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“…The meshes used in the HTC are unstructured consisting of mostly hexahedral cells and the simulations are carried out with free sink and trim. The obtained resistance coefficients are compared against three numerical references [28][29][30]. The simulations are carried out for a smooth hull surface i.e.…”

Section: Wigley Hull Resultsmentioning

confidence: 99%

The ghost fluid method for OpenFOAM: A comparative study in marine context

et al. 2020

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The open source CFD library OpenFOAM is utilized to implement the ghost fluid method (GFM). The implemented solver GFMFoam is compared against the standard volume-of-fluid (VOF) solver interFoam in OpenFOAM.For both VOF solvers, the scalar transport equation is solved similarly but the discretization of the momentum and continuity equations differ between GFMFoam and interFoam. The two methods are compared in four test cases with mild surface deformation. First, the GFM implementation is validated.Second, the results on a 2d interface shear layer highlight the importance of the viscous term treatment in the GFM. Third, the model scale Wiggley hull results indicate that the GFMFoam is more sensitive to the grid aspect ratio and resolution than interFoam but the viscous resistance is better predicted. Also, GFMFoam is shown to be less sensitive to numerical ventilation than interFoam. Fourth, the results from the Hamburg Test Case indicate a total resistance prediction within 1% when evaluated against reference data at model scale and 10% at full scale. Based on the steady state test cases of the present study, GFMFoam has moderate benefits over interFoam but it does not clearly outperform interFoam.

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Section: Wigley Hull Resultsmentioning

confidence: 99%

The ghost fluid method for OpenFOAM: A comparative study in marine context

et al. 2020

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“…The motivation for Publication IV came from the need to better understand the Reynolds number scaling effect between model scale and full scale marine simulations. Previous studies [79,80] as well as practical experience at Meyer-Turku had shown that the wave pattern of a ship in model scale and full scale can be vastly different at a fixed Froude number.…”

Section: Scaling Effects For a Simplified Transom Sternmentioning

confidence: 99%

Scaling effects on the free surface backward facing step flow

et al. 2021

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“…A preferred alternative method, the RANSE approach, could provide more detailed information on the flow around the ship hull, acceptably reliable results, less time, and lower cost than experimental method [1]. Therefore, the RANSE method has been broadly applied in studying the flow around the hull and predicting the ship's hydrodynamic parameters [1][2][3][4][5][6][7][8][9]. As proof, the study conducted by Satu Hänninen & Juha Sehweighofer [2] on the flow around the containership Hamburg Test Case at various model scales using the numerical RANSE method.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the RANSE method has been broadly applied in studying the flow around the hull and predicting the ship's hydrodynamic parameters [1][2][3][4][5][6][7][8][9]. As proof, the study conducted by Satu Hänninen & Juha Sehweighofer [2] on the flow around the containership Hamburg Test Case at various model scales using the numerical RANSE method. Their research results have provided images of the flow around the hull at various model scales.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Flow Around The 4600DWT Cargo Ship in Calm Water Condition Using RANSE Method

Ngoc,

Hai Ha,

Ngoc

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Information about the flow field around the ship may enable the designers to improve ship hull form concerning ship hydrodynamics. The flow around the ship can be obtained through model tests in towing tank and simulations. However, the experimental method provides the most reliable data about flow around the ship, but this method is too expensive and time-consuming. Currently, the RANSE (Reynolds – averaged Navier – Stokes equation) method has been widely employed in predicting the ship resistance and flow around the ship in the ship design process due to it provides relatively accurate results, savings in time and money compared to the experimental method. Therefore, this paper deals with the numerical results of the study flow around the 4600DWT cargo ship, which operate on Vietnam’s river-sea routes in calm water condition at different ship speeds using the RANSE method. The effect of ship speed on ship resistance components, wave pattern, wave profile along the ship, distribution of dynamic pressure, and wall shear stress on the ship’s hull surface and nominal wake field are presented and analysed in the paper.

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Numerical Investigation of the Scale Effect on the Flow around a Ship Hull

Cited by 9 publications

References 0 publications

The ghost fluid method for OpenFOAM: A comparative study in marine context

The ghost fluid method for OpenFOAM: A comparative study in marine context

Scaling effects on the free surface backward facing step flow

Numerical Simulation Flow Around The 4600DWT Cargo Ship in Calm Water Condition Using RANSE Method

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