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Development of Wind Induced Wave Predict Using Revisited Methods 원문보기

Journal of advanced research in ocean engineering, v.4 no.3, 2018년, pp.124 - 134  

Choi, Byoung-Yeol (Zentech Engineering, Co., Ltd.) ,  Jo, Hyo-Jae (Korea, Korea Maritime and Ocean University) ,  Lee, Kang-Ho (Zentech Engineering, Co., Ltd.) ,  Byoun, Dong-Ha (Zentech Engineering, Co., Ltd.)

Abstract ▼ AI-Helper 아이콘AI-Helper

In this study, when the stability of the structure against the ocean wave is considered for designing the offshore structures in the Pacific, Indian ocean and Atlantic regions where the cyclone is largely generated, the ocean wave caused by the cyclone as well as the storm surge which called wind in...

주제어

#Wind induced Wave   #Revisited Forms   #Jonswap spectral forms   #Simplified Donelan / Jonswap forms   #Donelan spectral forms   #Revised SPM forms   #SPM forms   #CEM forms   #SMB forms   #Revised Wilson forms   #Nobuhiro Matsunaga Model Test  

표/그림 (11)

AI 본문요약
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제안 방법

  • The conventional forms have been revisited for some problems that the results can be quite different in the value of HS and TP depending on which forms they are applied. As shown in Table 4.1, this study modified the factor which was eliminated boundary fetch limit and wind duration time of the Simplified Donelan and Jonswap forms(Wilson 1965), Donelan spectral forms(Donelan 1980), Revised SPM forms(Schafer Lake 2005, 2007, 2008), SPM forms(CERC 1977), the CEM forms(Kazeminezhad et al., 2005), SMB forms(Sverdrup Munk and Bretschneider 1947,1954, 1970), and Revised Wilson forms(Wilson 1965, Goda 2003) based on the Model test results of Nobuhiro Matsunaga (1996) without Jonswap spectral forms(Carter, 1982). This study also proved the efficiency of the experiment forms by comparing the conventional experiment forms and the modified experiment forms with the Nobuhiro Matsunaga model test (1996).
  • The cyclone as shown in the above figure has a large impact on the offshore and coastal structure, so this study is indispensable. In the study, we modified and revisited the other experiment forms based on Nobuhiro Matsunaga model test results. As the results, the Jonswap spectral forms(Carter, 1982) with the smallest deviation, and other experiment forms had large deviations.
  • In this study, a scale factor was used to replace the test result with the wind waves generated in the actual environment. The Scale-up factor is shown in the following equations (3.
  • 1 shows the map of areas in the world affected by tropical cyclones. In this study, we try to derive a correction forms that can predict precisely the wind induced waves using for design of offshore and coastal structures by proper analysis of model test and experiment forms.
  • The purpose of this study is not only to improve the problems of the conventional experiment forms which calculate wave affected by wind but also to modify an experiment forms for efficient calculation. The conventional forms have been revisited for some problems that the results can be quite different in the value of HS and TP depending on which forms they are applied.
  • 2a, there is a large deviation between the conventional experiment forms. Therefore, revisited experiment forms based on model test were derived. As a result, revisited experiment forms were derived as shown in Figure 4.
  • , 2005), SMB forms(Sverdrup Munk and Bretschneider 1947,1954, 1970), and Revised Wilson forms(Wilson 1965, Goda 2003) based on the Model test results of Nobuhiro Matsunaga (1996) without Jonswap spectral forms(Carter, 1982). This study also proved the efficiency of the experiment forms by comparing the conventional experiment forms and the modified experiment forms with the Nobuhiro Matsunaga model test (1996).
  • This study presented the differences in the results of several experiment forms such as Jonswap, Donelan, Revised SPM, SPM, CEM, SMB, Wilson and modified them based on the Model test to derive efficient experiment forms that are not overestimated.

대상 데이터

  • This study use the results of model test performed by Nobuhiro Matsunaga (1996). Experiments were carried out by using a water tank equipped with an inhalation-type wind tunnel. Figure 3.
  • 2 show a schematic diagram of the experimental apparatus. The tank was 32 m long, 0.6 m wide and 0.94 m high. A sloping bed was attached to the end of the tank as a beach model.
  • They were set 28 cm away. The wave signals were digitized at the intervals of 1/50 s and 16,384 data were sampled. Horizontal and vertical components of the wind-induced currents were obtained by using an electromagnetic current meter.

이론/모형

  • This study use the results of model test performed by Nobuhiro Matsunaga (1996). Experiments were carried out by using a water tank equipped with an inhalation-type wind tunnel.
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참고문헌 (13)

  1. A Etemad Shahidi, et al, 2009, "On the prediction of wave parameters using simplified methods", Journal od Costal Research. 

  2. Adem Akpinar, et al, 2013, "Performance evaluation of parameteric in hindcasting of wave parameters along the south coast of Black Sea", Indian Journal of Geo-Marine Science Vol 43(6). 

  3. Atsushi YAMAGUCHI, 2012, "An effect of the averaging time on maximum mean wind speeds during tropical cyclone", windeng.t.u-tokyo.ac.jp/ishihara/proceedings 

  4. AJ Yarde, et al, 1996, "Reservoir Dams : Wave condition, wave overtopping and slab protection", Report SR 459, HR Wallingford. 

  5. Carter, D.J.T., 1982. "Prediction of wave height and period for a constant wind velocity using the JONSWAP results", Ocean Engineering. 

  6. M C Deo, 2013, "Waves and Structures", http://www.civil.iitb.ac. 

  7. Hydraulics Research Ltd, 1987, "Wave Prediction in Reservoirs A Literature Review", Report No. EX 1527. 

  8. J. Piazzola, 2002, "A sea spray generation function for fetch-limited conditions", European Geophysical Society. 

  9. Kevin Ewans, et al, 2004, "WASP West Africa Swell Project", Shell International Exploration and Production, B.V. 

  10. Leen Baelus, et al, 2010, "Numerical modelling of wave regeneration by wind in the lee of a farm of wave energy converters using MILDwave for multiple wakes". 

  11. Manual describing the functions of the Coastal spreadsheet. 

  12. Nobuhiro Matsunaga, et al, 1996, "Wind-Induced Waves and Currents in a Nearshore Zone", Coastal Engineering. 

  13. Y. Ozeren, et al, 2009, "PREDICTING WIND DRIVEN WAVES IN SMALL RESERVOIRS", American Society of Agricultural and Biological Engineers Vol. 52(4). 

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