Abstract
Two previously-published deterministic methods which have been employed to compute the water particle kinematics required to predict hurricane-generated water wave forces on piles by the Morison equation are (1) the linear filter technique and (2) the stream function representation. "Exact comparisons between these previous studies have not been possible because the linear filter technique utilized continuous time data records of nonperiodic water waves while the stream function representation utilized only single waves from the continuous data records with water surface profiles which were assumed to be permanent, periodic forms traveling with a speed equal to the wave celerity. In order to compare these two methods, forty two single waves with well defined (but asymmetric) crests and troughs were selected from the four continuous data files recorded during Hurricane Carla by Wave Force Project II. In addition, thirteen single waves recorded by Wave Force Project I were utilized in a phase averaged form for comparison by the two methods. Based on the same data sets, comparisons of the normalized mean square differences between measured and predicted forces computed using the previously published force coefficients indicate generally better results from the stream function method using Dean-Aagaard coefficients. Under certain conditions, results obtained using the linear filter technique may be improved when used with the Dean-Aagaard coefficients.
Original language | English (US) |
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Title of host publication | Offshore Technology Conference, OTC 1974 |
Publisher | Offshore Technology Conference |
Pages | 17-25 |
Number of pages | 9 |
ISBN (Electronic) | 9781555636340 |
DOIs | |
State | Published - 1974 |
Event | 6th Annual Offshore Technology Conference, OTC 1974 - Houston, United States Duration: May 6 1974 → May 8 1974 |
Publication series
Name | Proceedings of the Annual Offshore Technology Conference |
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Volume | 1974-May |
ISSN (Print) | 0160-3663 |
Other
Other | 6th Annual Offshore Technology Conference, OTC 1974 |
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Country/Territory | United States |
City | Houston |
Period | 5/6/74 → 5/8/74 |
Funding
This paper was prepared as part of a Joint Petroleum Industr~ Wave Force Project sponsored by the following twelve major oil companies as participants: Amoco, Chevron, Cities Service, Continental, Gulf, Mobil, Pennzoil, Phillips, Placid, Shell, Texaco and Union. Dr. Frank Hsu of Amoco Production Company serves as Project Manager. The financial and technical support provided by the participants and their concurrence in publication of these results are gratefully acknowledged. The initial computer programming and critical interpretation of the comparisons were the responsibility of Mr. Gerry Mallery and his contributions are appreciated.
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Ocean Engineering
- Energy Engineering and Power Technology
- Mechanical Engineering