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Modeling of Ship Hydrodynamics
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Modeling of Ship Hydrodynamics

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (5 November 2020) | Viewed by 11689

Special Issue Editor

Dr. Shanti Bhushan

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Mississippi State University, Starkville, MS 39762, USA
Interests: computational fluid dynamics; turbulence modeling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ship propulsion, seakeeping, and maneuvering involve complex flow physics which in turn involves flow separation and reattachment, wave breaking, turbulent boundary, and free-shear layers, to name a few. Computation fluid dynamics methods and models need to be validated to assess their predictive capability, and/or new methods and models need to be developed to improve efficiency of the solvers. In addition, considering the advances in high-performance computing, high-fidelity methods and models need to be developed and applied to understand the complex flow physics. This Special Issue invites original research papers in the field of ship hydrodynamics, including application of existing methods and models for complex geometries and flow conditions; uncertainty quantification of CFD predictions; validation of efficient grid generation methods, accurate turbulence, interface or wave-breaking models; and flow physics analysis using high-fidelity simulations.

Dr. Shanti Bhushan
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • CFD verification and validation
  • Structures/unstructured grids
  • Turbulence modelling
  • Separating/attaching boundary layer flow
  • Air–water interface and breaking waves
  • Propulsion, seakeeping, maneuvering

Published Papers (4 papers)

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Research

23 pages, 40930 KiB  
Article
Assessment of Numerical Methods for Plunging Breaking Wave Predictions
by Shanti Bhushan, Oumnia El Fajri, Graham Hubbard, Bradley Chambers and Christopher Kees
J. Mar. Sci. Eng. 2021, 9(3), 264; https://doi.org/10.3390/jmse9030264 - 02 Mar 2021
Cited by 2 | Viewed by 1645
Abstract
This study evaluates the capability of Navier–Stokes solvers in predicting forward and backward plunging breaking, including assessment of the effect of grid resolution, turbulence model, and VoF, CLSVoF interface models on predictions. For this purpose, 2D simulations are performed for four test cases: [...] Read more.
This study evaluates the capability of Navier–Stokes solvers in predicting forward and backward plunging breaking, including assessment of the effect of grid resolution, turbulence model, and VoF, CLSVoF interface models on predictions. For this purpose, 2D simulations are performed for four test cases: dam break, solitary wave run up on a slope, flow over a submerged bump, and solitary wave over a submerged rectangular obstacle. Plunging wave breaking involves high wave crest, plunger formation, and splash up, followed by second plunger, and chaotic water motions. Coarser grids reasonably predict the wave breaking features, but finer grids are required for accurate prediction of the splash up events. However, instabilities are triggered at the air–water interface (primarily for the air flow) on very fine grids, which induces surface peel-off or kinks and roll-up of the plunger tips. Reynolds averaged Navier–Stokes (RANS) turbulence models result in high eddy-viscosity in the air–water region which decays the fluid momentum and adversely affects the predictions. Both VoF and CLSVoF methods predict the large-scale plunging breaking characteristics well; however, they vary in the prediction of the finer details. The CLSVoF solver predicts the splash-up event and secondary plunger better than the VoF solver; however, the latter predicts the plunger shape better than the former for the solitary wave run-up on a slope case. Full article
(This article belongs to the Special Issue Modeling of Ship Hydrodynamics)
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16 pages, 7272 KiB  
Article
Comparison between Model Test and Three CFD Studies for a Benchmark Container Ship
by Ana-Maria Chiroșcă and Liliana Rusu
J. Mar. Sci. Eng. 2021, 9(1), 62; https://doi.org/10.3390/jmse9010062 - 08 Jan 2021
Cited by 8 | Viewed by 3540
Abstract
An alternative to experiments is the use of numerical model tests, where the performances of ships can be evaluated entirely by computer simulations. In this paper, the free surface viscous flow around a bare hull model is simulated with three Computational Fluid Dynamics [...] Read more.
An alternative to experiments is the use of numerical model tests, where the performances of ships can be evaluated entirely by computer simulations. In this paper, the free surface viscous flow around a bare hull model is simulated with three Computational Fluid Dynamics (CFD) software packages (FINE Marine, ANSYS CFD and SHIPFLOW) and compared to the results obtained during the experimental tests. The bare hull model studied is the Duisburg Test Case (DTC), developed at the Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT) for benchmarking and validation of the numerical methods. Hull geometry and model test results of resistance, conducted in the experimental facility at SVA Postdam, Nietzschmann, in 2010, are publicly available. A comparative analysis of the numerical approach and experimental results is performed, related to the numerical simulation of the free surface viscous flow around a typical container ship. Further, a comparative analysis between the results provided by NUMECA, ANSYS and SHIPFLOW is performed. Regarding the solution obtained, a satisfactory agreement between the towing test results and the computation results can be noticed. The minimum mean error was obtained through the SHIPFLOW case, 2.011%, which proved the best solution for the case studied. Full article
(This article belongs to the Special Issue Modeling of Ship Hydrodynamics)
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17 pages, 6228 KiB  
Article
A Study on Barge-Bank Interaction Forces Considering the Reflected Waves
by Chunbeom Hong and Sangmin Lee
J. Mar. Sci. Eng. 2020, 8(6), 451; https://doi.org/10.3390/jmse8060451 - 19 Jun 2020
Cited by 4 | Viewed by 2090
Abstract
Because of the relative location between the ship and the bank, the fluid flow becomes complicated such that unstable hydrodynamic forces result in the yaw movement of the ship in an unintended direction. To consider the nonlinear effect, this study calculated the lateral [...] Read more.
Because of the relative location between the ship and the bank, the fluid flow becomes complicated such that unstable hydrodynamic forces result in the yaw movement of the ship in an unintended direction. To consider the nonlinear effect, this study calculated the lateral force and yaw moment of barges with different shapes in confined waters, using computational fluid dynamics (CFD). We analyzed the effect of the reflected waves from the bank on the barges. The sway force tended to increase as both barges became closer to the bank, because it worked as a suction force that pulled them toward the closest bank. The yaw moment increased as the barges became closer to the bank, regardless of the shape of the bow. At y′ = 0.2B, when the barges were at the closest to the bank, it rapidly soared. The wave pattern showed that the diverging waves from the shoulder did not disperse, and were blocked by the bank and returned to the ship; such phenomena resulted in changing the hydrodynamic force on the barge. It is determined that the effect of free surface must be considered when conducting a comprehensive analysis of the bank effect when the ship is close to the bank. Full article
(This article belongs to the Special Issue Modeling of Ship Hydrodynamics)
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26 pages, 16943 KiB  
Article
Residual Resistance of Displacement Vessels
by Ada Gotman
J. Mar. Sci. Eng. 2020, 8(6), 400; https://doi.org/10.3390/jmse8060400 - 01 Jun 2020
Cited by 4 | Viewed by 3323
Abstract
The hydrodynamics of the residual resistance of ships is formulated for the first time: the residual resistance of vessel displacement is the result of the formation of retaining bow waves, Kelvin wave systems and their interaction—as well as the action of viscosity, which [...] Read more.
The hydrodynamics of the residual resistance of ships is formulated for the first time: the residual resistance of vessel displacement is the result of the formation of retaining bow waves, Kelvin wave systems and their interaction—as well as the action of viscosity, which is expressed in the form of a turbulent subsurface boundary layer. Michell’s integral is taken as a basis for calculations of residual resistance. The two corrections take into account the shear layer of wave surface and the shift of the Kelvin bow system by the retaining waves. The correlation of the calculated and experimental curves confirms the validity of the described hydrodynamics of residual resistance. This article is intended for specialists in the field of hydrodynamics of displacement vessels and for designers of the ship hull. Full article
(This article belongs to the Special Issue Modeling of Ship Hydrodynamics)
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