Validation of hybrid URANS/LES methods for determination of forces and wake parameters of KVLCC2 tanker at manoeuvring conditions

Abbas, Nawar; Kornev, Nikolaĭ

doi:10.1080/09377255.2016.1157275

Cited by 16 publications

(5 citation statements)

References 15 publications

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“…Sakamoto et al 25,26 studied a DTMB 5415 bare hull in static and dynamic PMM tests based on CFD methods and validated the computed hydrodynamic forces and flow features with the model test data. 6,7 In the above-mentioned studies, [17][18][19][20][21][22][23][24][25][26] the CFD-based manoeuvring predictions were mostly conducted with zero sinkage and trim or given sinkage and trim, consequently reducing the computational effort, but may bring some error. Most recently, Hochbaum and Uharek 27 and Quadvlieg 28 pointed out that the comparisons among numerical results from different institutions for the KCS ship under the same manoeuvring condition were not satisfactory.…”

Section: Introductionmentioning

confidence: 99%

“…Simonsen and Stern 20,21 applied a Reynolds-averaged Navier–Stokes (RANS) code to compute the hydrodynamic forces acting on a Esso Osaka oil tanker model appended with rudder under static rudder and pure drift conditions and studied the flow pattern around the ship; a similar study was carried out by Simonsen et al 22 on an appended KCS ship. Xing et al 23 discussed the oblique flow around a KVLCC2 model at different drift angles; Abbas and Kornev 24 performed computations on pure drift and steady turning motions for the same ship. Sakamoto et al 25,26 studied a DTMB 5415 bare hull in static and dynamic PMM tests based on CFD methods and validated the computed hydrodynamic forces and flow features with the model test data.…”

Section: Introductionmentioning

confidence: 99%

“…In the above-mentioned studies, 17–26 the CFD-based manoeuvring predictions were mostly conducted with zero sinkage and trim or given sinkage and trim, consequently reducing the computational effort, but may bring some error. Most recently, Hochbaum and Uharek 27 and Quadvlieg 28 pointed out that the comparisons among numerical results from different institutions for the KCS ship under the same manoeuvring condition were not satisfactory.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Computational fluid dynamics prediction of hydrodynamic forces on a manoeuvring ship including effects of dynamic sinkage and trim

Liu

Zou

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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Understanding the manoeuvring performance of a ship requires accurate predictions of the hydrodynamic forces and moments on the ship. In the present study, the hydrodynamic forces and moments on a manoeuvring container ship at various rudder and drift angles are numerically predicted by solving the unsteady Reynolds-averaged Navier-Stokes equations. The effects of dynamic sinkage and trim on the hydrodynamic forces are first investigated together with a grid dependency study to estimate the numerical error and uncertainty caused by grid discretization, and with a validation study combining the experimental data. The results show that the effect of dynamic sinkage and trim is non-negligible, since including it improves the hydrodynamic force predictions and reduces the numerical error and uncertainty, and the averaged error and uncertainty are smaller than the other computational fluid dynamics results where sinkage and trim were fixed with given values from model tests. Therefore, it is included in the subsequent systematic simulations regarding the influence of rudder and drift angles. The computed forces, moments and rudder coefficients at different rudder and drift angles on the container ship are compared with the benchmark model test data. From the computations, all the predicted quantities are in satisfactory agreement with the experimental data. The details of the flow filed and hydrodynamic forces, such as pressure distributions, transverse force distributions along the hull, velocity contours, streamlines and wave patterns are presented and discussed, and a deep insight into the physical mechanism in the hydrodynamic forces on a manoeuvring ship is obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Computational fluid dynamics prediction of hydrodynamic forces on a manoeuvring ship including effects of dynamic sinkage and trim

Liu

Zou

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…Recent research [41] suggests that the use of Detached Eddy Simulation (DES) can be highly beneficial in terms of accuracy without resorting to extremely high cell numbers, as would be the case if one opted for Large Eddy Simulation (LES) instead [42]. Such approaches have been applied to study the problem of ships advancing with a drift angle [11], [12], [43]. In this study, widely used models are used in favor of scale resolving alternatives.…”

Section: Resultsmentioning

confidence: 99%

Experimental and Numerical Study of an Obliquely Towed Ship Model in Confined Waters

Terziev¹,

Elsherbiny²,

Tezdogan³

et al. 2021

Preprint

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In this study, the forces and moments acting on the KCS ship model as a result of oblique towing at 10 and 20 degrees drift angles are evaluated experimentally and numerically via a commercial Reynolds averaged Navier-Stokes solver. For the purposes of this work, the KCS hull is modelled both experimentally and numerically at a scale factor of 1:75. The adopted case-studies feature both horizontal and vertical restrictions. Thus, the subject of this work is the oblique motion of a ship in a narrow canal with a depth of h/T=2.2. The relative impact of turbulence modelling is assessed by comparing the computed integral quantities via several eddy-viscosity closure strategies. These include significant variants of the k-ϵ and k-ω models as well as a widely used one-equation closure. Multiphase numerical simulations are performed at several of the experimentally investigated depth Froude numbers for each drift angle condition in order to fully capture the physics of the problem at hand. The present study aims to provide a quantitative evaluation of the performance of the adopted turbulence models and recommended the best closure strategy for the class of investigated problems.

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“…DES 3 and IDDES 4 were conducted for a KRISO (Korea Research Institute of Ships and Ocean Engineering) very large crude carrier at drift angles of 6°, 12°, and 30°. The previous studies analyzed the vortical structures and instabilities in the wake field.…”

Section: Introductionmentioning

confidence: 99%

Computational simulation of turbulent flows around a marine propeller by solving the partially averaged Navier–Stokes equation

Seok

Lee

Rhee

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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This study concerns the characteristics of the partially averaged Navier–Stokes method for local flow analysis around a rotating propeller. Partially averaged Navier–Stokes, resolving crucial large-scale structures of turbulent flow at a given computational grid resolution, is a bridging turbulence closure model between the Reynolds-averaged Navier–Stokes equation and the direct numerical simulation. A detailed comparison between partially averaged Navier–Stokes and Reynolds-averaged Navier–Stokes models is made to achieve a better understanding of partially averaged Navier–Stokes characteristics for predicting the coherent structures in turbulent flow. The two-equation k-ω shear stress transport model and the seven-equation Reynolds stress model are selected for Reynolds-averaged Navier–Stokes computations. The problem of interest is the flow around a rotating KP505 propeller in open water conditions at an advance ratio of 0.7. Near the leading edge, the partially averaged Navier–Stokes results are similar to those of Reynolds stress model in terms of the vortical structures. Vorticity predicted by different turbulence models, however, shows significant differences. For a more detailed analysis, the velocity gradient constituting the vorticity is identified at the leading edge. It is proven that partially averaged Navier–Stokes is able to capture the anisotropic characteristics of the flow at the leading edge, where both the geometric and flow characteristics change abruptly.

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Validation of hybrid URANS/LES methods for determination of forces and wake parameters of KVLCC2 tanker at manoeuvring conditions

Cited by 16 publications

References 15 publications

Computational fluid dynamics prediction of hydrodynamic forces on a manoeuvring ship including effects of dynamic sinkage and trim

Computational fluid dynamics prediction of hydrodynamic forces on a manoeuvring ship including effects of dynamic sinkage and trim

Experimental and Numerical Study of an Obliquely Towed Ship Model in Confined Waters

Computational simulation of turbulent flows around a marine propeller by solving the partially averaged Navier–Stokes equation

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