Validity and visualization of a numerical model used to determine dynamic configurations of fishing nets
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概要
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The aim of the present study was to develop a numerical calculation method tosimulate the three-dimensional dynamic behavior of fishing nets. In a previous study, we presenteda formulation to calculate net configurations. In this method, fishing nets were modeled as a groupof lumped mass points interconnected with springs that have no mass. To verify the validity ofcalculation results using a computational model, we performed the flume tank experiments with arectangular net and compared results with those of the numerical simulation of experiments. Usingour method, numerical calculations for a rectangular net in a steady flow can provide accurate results.The calculated load and tension force distribution of the flat net were generally in accordance withthe results of the flume tank experiments. This study shows that our method is valid for the simulationof fishing nets; furthermore, we have resolved earlier problems that were associated with this model.網漁具の水中での形状や運動を推定できる数値シミュレーション手法を開発するために，本報では前報で示された計算用モデルの妥当性を検証する。実験では定常流中に3種類の長方形の平面網地を設置し，流速を変化させながら網形状と網糸に作用する荷重を計測した。網地形状の計算結果はどのケースでも実物と非常に良く一致した。平面網地上辺に作用する荷重は計算結果と良い一致を示した。網糸張力の分布状況についても，実験結果と概ね一致した。これらの結果は本計算モデルが網漁具の形状や運動を推定するのに十分有効であることを示す。
- Blackwell Publishingの論文
- 2003-08-01
著者
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Takagi Tsutomu
Department Of Cardiology Osaka City University Graduate School Of Medicine
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Takagi Tsutomu
Department Of Fisheries Faculty Of Agriculture Kinki University
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Takagi Tsutomu
Kinki Univ. Nara Jpn
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YAMAMOTO KATSUTARO
Graduate School of Fisheries Sciences, Hokkaido University
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SUZUKI KATSUYA
Graduate school of Fisheries Sciences, Hokkaido University
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SUZUKI KATSUYA
Division of Marine Environment and Resources, Graduate School of Fisheries Sciences, Hokkaido Univer
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SHIMIZU TAKASHI
Division of Marine Environment and Resources, Graduate School of Fisheries Sciences, Hokkaido Univer
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HIRAISHI TOMORORI
Division of Marine Environment and Resources, Graduate School of Fisheries Sciences, Hokkaido Univer
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YAMAMOTO KATSUTARO
Division of Marine Environment and Resources, Graduate School of Fisheries Sciences, Hokkaido Univer
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NASHIMOTO KATSUAKI
Nippon Data Service Co. Ltd.
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Suzuki Katsuya
Graduate School Of Fisheries Sciences Hokkaido University
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HIRAISHI TOMONORI
Division of Marine Environment and Resources, Graduate School of Fisheries Sciences, Hokkaido Univer
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Takagi Tsutomu
Departmen Of Cardiology Kobe General Hospital
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Yamamoto Katsutaro
Graduate School Of Fisheries Sciences Hokkaido University
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Hiraishi Tomonori
Graduate School Of Fisheries Sciences Hokkaido University
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Shimizu Takashi
Graduate School Of Fisheries Sciences Hokkaido University
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Shimizu Takashi
Division Of Biolobical Sciences Graduate School Of Science Hokkaido University
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Nashimoto Katsuaki
Nippon Data Service
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