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| 1 | Comparative Study of Two Approaches to Model the Offshore Fish Cages显示文摘The goal of this paper is to provide a comparative analysis of two commonly used approaches to discretize offshore fish cages: the lumped-mass approach and the finite element technique. Two case studies are chosen to compare predictions of the LMA(lumped-mass approach) and FEA(finite element analysis) based numerical modeling techniques. In both case studies, we consider several loading conditions consisting of different uniform currents and monochromatic waves. We investigate motion of the cage, its deformation, and the resultant tension in the mooring lines. Both model predictions are sufficient close to the experimental data, but for the first experiment, the DUT-Flex Sim predictions are slightly more accurate than the ones provided by Aqua-FETM. According to the comparisons, both models can be successfully utilized to the design and analysis of the offshore fish cages provided that an appropriate safety factor is chosen. | 赵云鹏 王欣欣 Jud DECEW Igor TSUKROV 白晓东 毕春伟 | 2015 | China Ocean Engineering2015，29，3： | 5 |
| 2 | Drag on Hydroid-Fouled Nets – An Experimental Approach显示文摘The present study investigated the drag increase on aquaculture nets due to biofouling of the colonial hydroid Ectopleura larynx. It had two main parts: firstly the growth characteristics of E. larynx were investigated by use of field tests at a Norwegian aquaculture site; secondly the hydrodynamic drag on the fouled twines was studied in a towing tank by using fabricated models of net twines with artificial hydroid fouling. In the field tests, the growth of the hydroids was first measured after three weeks of immersion and then again after six weeks. During this interval, the density of hydroids and the thickness of the hydroid stem were almost constant(1.4 hydroids/mm and 0.29 mm, respectively), while the average length of the hydroids increased from 6.4 to 11.2 mm. The hydroid length followed a Rayleigh distribution, while the thickness was normal(Gaussian) distributed. Replicas of twines with three different levels of hydroid growth were made(1.5 hydroids/mm twine, hydroid length 9 mm, 16 mm and 20 mm), and the drag on these twines was measured at different towing velocities(0.1 to 1.4 m/s) and with different twine configurations. For the twine with the shortest hydroids(9 mm), the drag was from 1.5 times(Re=4000) to 2.2 times(Re=1000) the drag on a clean twine. For the longest hydroids(21 mm), the drag was 2 times and 3.8 times, respectively. | Pl LADER David W. FREDRIKSSON Jana GUENTHER Zsolt VOLENT Nina BLOCHER David KRISTIANSEN Lars GANSEL Jud DECEW | 2015 | China Ocean Engineering2015，29，3： | 1 |
| 3 | A case study of a modified gravity type cage and mooring system using numerical and physical models 显示文摘 | DeCew J Fredriksson D W Bugrov L | 2005 | IEEE J Oce Engin2005，30，1： | 1 |
| 4 | The Scope of Privacy in Law and Ethics显示文摘 | DeCew J | 1986 | Law and Philosophy1986，5，： | 1 |
| 5 | A case study of a modified gravity type cage and mooring system using nu- merical and physical models显示文摘 | DECEW J FREDRIKSSON D W BUGROV L | 2005 | IEEE J Oceanic Engin2005，30，1： | 1 |
| 6 | A case study of a modified gravity type cage and mooring system using numerical and physical models显示文摘 | DECEW J FREDRIKSSON D W BUGROV L | 2005 | IEEE Journal of Oceanic Engineering2005，30，1： | 1 |
| 7 | Modeling of dynamic behavior of a single-point moored submersible fish cage under currents 显示文摘 | DECEW J TSUKROV I RISSO A | 2010 | Aquacultural Engineering2010，43，： | 1 |
| 8 | Development of large fish farm numerical modeling techniques with in situ mooring tension comparisons 显示文摘 | FREDRIKSSON D W DECEW J TSUKROV I | 2007 | Aquacultural Engineering2007，36，2： | 1 |
| 9 | The prevalence of HPV associated cervical intraepithelial neoplasia in women under age 21: who will be missed under the new cervical cancer screening guidelines? 显示文摘 | DeCew AE Hadler JL Daley AM | 2013 | J Pediatr Adolese Gyneeol2013，26，6： | 1 |
| 10 | Field studies of corrosion behavior of copper alloys in natural seawater显示文摘 | Drach Andrew Tsukrov Igor DeCew Judson | 2013 | Corrosion Science2013，76，： | 1 |
| 11 | Development of structural modeling techniques for evaluating HDPE plastic net pens used in marine aquaculture显示文摘 | Fredriksson D W Decew J C Tsukrov I | 2007 | Ocean Engineering2007，34，16： | 1 |
| 12 | The design and analysis of a four - cage grid mooring for open ocean aquaculture显示文摘 | Fredriksson D W Decew J Swift M R | 2004 | Aquacultural Engineering2004，，32： | 1 |
| 13 | Development of structural modeling techniques for evaluating HDPE plastic net pens used in marine aquaculture显示文摘 | David W. Fredriksson Judson C. DeCew Igor Tsukrov | 2007 | Ocean Engineering2007，，16： | 1 |
| 14 | The prevalence of HPV associated cervical intraepithelial neoplasia in women under age 21 : who will be missed under the new cervical cancer screening guide- lines? 显示文摘 | DeCew AE Hadler JL Daley AM | 2013 | J Pediat Adolesc Gynecol2013，26，6： | 1 |
| 15 | The design and analysis of a four-eage grid mooring for open ocean aquaculture 显示文摘 | Fredriksson D W Decew J Swifg M R | 2004 | Aquaculture Engineering2004，32，： | 1 |
| 16 | Development of structural modeling techniques for evaluating HDPE plastic net pens used in marine aquaculture 显示文摘 | Fredriksson D W Decew J C Tsukrov I | 2007 | Ocean Engineering2007，34，： | 1 |
| 17 | A case study of a mod- ified gravity type cage and mooring system using numerical and physical models 显示文摘 | DeCew J Fredriksson D W Bugrov L | 2005 | IEEE Journal of Oceanic Engineering2005，30，1： | 1 |
| 18 | Development of large fish farm numerical modeling techniques with in situ mooting ten- sion comparisons 显示文摘 | Fredriksson D W DeCew J Tsukrov I | 2007 | Aquacultural Engineering2007，36，2： | 1 |
| 19 | Development of structural modeling techniques for evaluating HDPE plastic net pens used in marine aquaculture显示文摘 | Fredriksson D W Decew J C Tsukrov I | 2007 | Ocean Engineering2007，34，16： | 1 |
| 20 | A Case Study of a Modified Gravity Type Cageand Mooring System Using Numerical and Physical Models 显示文摘 | DECEW J FREDRIKSSON D W BUGROV L | 2005 | IEEE Journal of Oceanic Engineering2005，31，： | 1 |
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