Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test
An investigation was conducted to determine whether the changes in the maneuvering forces and moments acting on a hull could be affected by changing the vertical center of gravity (VCG) of a tanker. The changes in the hydrodynamic forces and moment acting on a hull according to the restraint conditi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Korean Society of Ocean Engineers
2018-12-01
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| Series: | 한국해양공학회지 |
| Subjects: | |
| Online Access: | https://doi.org/10.26748/KSOE.2018.32.6.433 |
| _version_ | 1811322228645560320 |
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| author | Taechul Park Sungwook Lee Kwang-Jun Paik Sung-Ho Moon |
| author_facet | Taechul Park Sungwook Lee Kwang-Jun Paik Sung-Ho Moon |
| author_sort | Taechul Park |
| collection | DOAJ |
| description | An investigation was conducted to determine whether the changes in the maneuvering forces and moments acting on a hull could be affected by changing the vertical center of gravity (VCG) of a tanker. The changes in the hydrodynamic forces and moment acting on a hull according to the restraint conditions of motion were examined using CFD for cases where the VCG was located at the design draught (100% of draught), under the design draught (75% of draught), and at half of the design draught (50% of draught). The following motion restraint conditions were selected: (1) fixed restraints for everything; (2) heave, pitch, and roll free restraint; and (3) heave and pitch free restraints. It was found that restraint condition (2) had the best agreement with the model experiment results. In addition, it was found that the hydrodynamic forces and moment acting on the hull with restraint condition (2) could be greatly affected in the model tests and CFD calculations by the various configurations for the vertical center of gravity of the hull. Finally, it was concluded that the location of the vertical center of gravity of the hull could be an important factor when more accurate hydrodynamic maneuvering forces and moment are estimated. |
| first_indexed | 2024-04-13T13:31:28Z |
| format | Article |
| id | doaj.art-6a1540e788ec477196136c0e5019a18b |
| institution | Directory Open Access Journal |
| issn | 1225-0767 2287-6715 |
| language | English |
| last_indexed | 2024-04-13T13:31:28Z |
| publishDate | 2018-12-01 |
| publisher | The Korean Society of Ocean Engineers |
| record_format | Article |
| series | 한국해양공학회지 |
| spelling | doaj.art-6a1540e788ec477196136c0e5019a18b2022-12-22T02:44:58ZengThe Korean Society of Ocean Engineers한국해양공학회지1225-07672287-67152018-12-0132643343910.26748/KSOE.2018.32.6.433Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift TestTaechul Park0Sungwook Lee1Kwang-Jun Paik2Sung-Ho Moon3Korea Maritime and Ocean UniversityKorea Maritime and Ocean UniversityInha UniversityKorea Maritime and Ocean UniversityAn investigation was conducted to determine whether the changes in the maneuvering forces and moments acting on a hull could be affected by changing the vertical center of gravity (VCG) of a tanker. The changes in the hydrodynamic forces and moment acting on a hull according to the restraint conditions of motion were examined using CFD for cases where the VCG was located at the design draught (100% of draught), under the design draught (75% of draught), and at half of the design draught (50% of draught). The following motion restraint conditions were selected: (1) fixed restraints for everything; (2) heave, pitch, and roll free restraint; and (3) heave and pitch free restraints. It was found that restraint condition (2) had the best agreement with the model experiment results. In addition, it was found that the hydrodynamic forces and moment acting on the hull with restraint condition (2) could be greatly affected in the model tests and CFD calculations by the various configurations for the vertical center of gravity of the hull. Finally, it was concluded that the location of the vertical center of gravity of the hull could be an important factor when more accurate hydrodynamic maneuvering forces and moment are estimated.https://doi.org/10.26748/KSOE.2018.32.6.433Vertical center of gravity(VCG)ManoeuvrabilityComputational fluid dynamicsManoeuvring hydrodynamicsRoll motion3 Degree of freedom(3DOF) |
| spellingShingle | Taechul Park Sungwook Lee Kwang-Jun Paik Sung-Ho Moon Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test 한국해양공학회지 Vertical center of gravity(VCG) Manoeuvrability Computational fluid dynamics Manoeuvring hydrodynamics Roll motion 3 Degree of freedom(3DOF) |
| title | Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test |
| title_full | Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test |
| title_fullStr | Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test |
| title_full_unstemmed | Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test |
| title_short | Study on Hydrodynamic Forces Acting on Tanker Hull with Consideration of Various Vertical Centers of Gravity in Drift Test |
| title_sort | study on hydrodynamic forces acting on tanker hull with consideration of various vertical centers of gravity in drift test |
| topic | Vertical center of gravity(VCG) Manoeuvrability Computational fluid dynamics Manoeuvring hydrodynamics Roll motion 3 Degree of freedom(3DOF) |
| url | https://doi.org/10.26748/KSOE.2018.32.6.433 |
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