Investigation and improvement of Michell's thin-ship theory
In this report, the Michell’s thin-ship theory which is a linear wave-making theory, is evaluated to investigate its accuracy in predicting the wave-making resistance stimulated by ships. The theory gives poor estimates for conventional hull forms at relative low speed range (Fn<0.30), specifical...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/150157 |
| _version_ | 1826115139841032192 |
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| author | Lim, Luke Yi Xian |
| author2 | Liu Shukui |
| author_facet | Liu Shukui Lim, Luke Yi Xian |
| author_sort | Lim, Luke Yi Xian |
| collection | NTU |
| description | In this report, the Michell’s thin-ship theory which is a linear wave-making theory, is evaluated to investigate its accuracy in predicting the wave-making resistance stimulated by ships. The theory gives poor estimates for conventional hull forms at relative low speed range (Fn<0.30), specifically Wigley Hull and Series 60 Hull with CB = 0.6 which will be focused on in this report. This report introduces improvements to three components of the original theory, which are a) boundary layer, b) phase shifting and c) oscillations. The programming language, FORTRAN, is used to write a program that applies the original theory to calculate the wave resistance encountered by ships. The improvements are also included in the program to obtain the improved wave resistance values. The obtained wave-making resistance results based on the original and improved methods are compared thereafter to demonstrate the effectiveness of the introduced modifications. |
| first_indexed | 2024-10-01T03:50:40Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/150157 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:50:40Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1501572021-06-08T13:44:37Z Investigation and improvement of Michell's thin-ship theory Lim, Luke Yi Xian Liu Shukui School of Mechanical and Aerospace Engineering skliu@ntu.edu.sg Engineering::Mechanical engineering In this report, the Michell’s thin-ship theory which is a linear wave-making theory, is evaluated to investigate its accuracy in predicting the wave-making resistance stimulated by ships. The theory gives poor estimates for conventional hull forms at relative low speed range (Fn<0.30), specifically Wigley Hull and Series 60 Hull with CB = 0.6 which will be focused on in this report. This report introduces improvements to three components of the original theory, which are a) boundary layer, b) phase shifting and c) oscillations. The programming language, FORTRAN, is used to write a program that applies the original theory to calculate the wave resistance encountered by ships. The improvements are also included in the program to obtain the improved wave resistance values. The obtained wave-making resistance results based on the original and improved methods are compared thereafter to demonstrate the effectiveness of the introduced modifications. Bachelor of Engineering (Mechanical Engineering) 2021-06-08T13:44:36Z 2021-06-08T13:44:36Z 2021 Final Year Project (FYP) Lim, L. Y. X. (2021). Investigation and improvement of Michell's thin-ship theory. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/150157 https://hdl.handle.net/10356/150157 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering Lim, Luke Yi Xian Investigation and improvement of Michell's thin-ship theory |
| title | Investigation and improvement of Michell's thin-ship theory |
| title_full | Investigation and improvement of Michell's thin-ship theory |
| title_fullStr | Investigation and improvement of Michell's thin-ship theory |
| title_full_unstemmed | Investigation and improvement of Michell's thin-ship theory |
| title_short | Investigation and improvement of Michell's thin-ship theory |
| title_sort | investigation and improvement of michell s thin ship theory |
| topic | Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/150157 |
| work_keys_str_mv | AT limlukeyixian investigationandimprovementofmichellsthinshiptheory |