Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership
An important aspect of the design of the propeller is the determination of the nominal wake. In this study, the nominal wake of a Post Panamax containership is determined numerically and experimentally at different speeds and loading conditions. The numerical simulations are based on the Reynolds av...
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| Language: | English |
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Faculty of Mechanical Engineering and Naval Architecture
2024-01-01
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| Series: | Brodogradnja |
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| Online Access: | https://hrcak.srce.hr/file/464596 |
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| author | Carlo Giorgio Grlj Nastia Degiuli Ivana Martić |
| author_facet | Carlo Giorgio Grlj Nastia Degiuli Ivana Martić |
| author_sort | Carlo Giorgio Grlj |
| collection | DOAJ |
| description | An important aspect of the design of the propeller is the determination of the nominal wake. In this study, the nominal wake of a Post Panamax containership is determined numerically and experimentally at different speeds and loading conditions. The numerical simulations are based on the Reynolds averaged Navier Stokes equations, which are discretized using the finite volume method and the system of equations is closed using the Shear stress transport turbulence model. The nominal wake is determined with numerical simulations that model the effects of the free surface and without the free surface included, i.e., double body simulations. The verification study is conducted to assess the numerical uncertainty for the grid size and time step. The validation study includes a comparison of the contours of the dimensionless axial velocity component, the radial distributions of the circumferentially averaged dimensionless axial velocity components, and the integral values of the nominal wake. The effect of speed is more noticeable for the results obtained with EFD in comparison to the numerically obtained results, which is especially pronounced for the integral value of the nominal wake. The integral value of the nominal wake increases with the increase in the trim angle. |
| format | Article |
| id | doaj-art-1fab9f8e1489450face81f4a76b73656 |
| institution | Kabale University |
| issn | 0007-215X 1845-5859 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Faculty of Mechanical Engineering and Naval Architecture |
| record_format | Article |
| series | Brodogradnja |
| spelling | doaj-art-1fab9f8e1489450face81f4a76b736562025-01-09T11:42:33ZengFaculty of Mechanical Engineering and Naval ArchitectureBrodogradnja0007-215X1845-58592024-01-0175413410.21278/brod75405Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containershipCarlo Giorgio Grlj0Nastia Degiuli1Ivana Martić2University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, Zagreb, 10000, CroatiaUniversity of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, Zagreb, 10000, CroatiaUniversity of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, Zagreb, 10000, CroatiaAn important aspect of the design of the propeller is the determination of the nominal wake. In this study, the nominal wake of a Post Panamax containership is determined numerically and experimentally at different speeds and loading conditions. The numerical simulations are based on the Reynolds averaged Navier Stokes equations, which are discretized using the finite volume method and the system of equations is closed using the Shear stress transport turbulence model. The nominal wake is determined with numerical simulations that model the effects of the free surface and without the free surface included, i.e., double body simulations. The verification study is conducted to assess the numerical uncertainty for the grid size and time step. The validation study includes a comparison of the contours of the dimensionless axial velocity component, the radial distributions of the circumferentially averaged dimensionless axial velocity components, and the integral values of the nominal wake. The effect of speed is more noticeable for the results obtained with EFD in comparison to the numerically obtained results, which is especially pronounced for the integral value of the nominal wake. The integral value of the nominal wake increases with the increase in the trim angle.https://hrcak.srce.hr/file/464596efdcfdcontainershiploading conditionsnominal wakerans |
| spellingShingle | Carlo Giorgio Grlj Nastia Degiuli Ivana Martić Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership Brodogradnja efd cfd containership loading conditions nominal wake rans |
| title | Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership |
| title_full | Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership |
| title_fullStr | Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership |
| title_full_unstemmed | Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership |
| title_short | Experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership |
| title_sort | experimental and numerical assessment of the effect of speed and loading conditions on the nominal wake of a containership |
| topic | efd cfd containership loading conditions nominal wake rans |
| url | https://hrcak.srce.hr/file/464596 |
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