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Validity and visualization of a numerical model used to determine dynamic configurations of fishing nets

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Title: Validity and visualization of a numerical model used to determine dynamic configurations of fishing nets
Other Titles: 網地の形状と運動に関する数値計算モデルの妥当性と可視化について
Authors: Suzuki, Katsuya1 Browse this author
Takagi, Tsutomu2 Browse this author
Shimizu, Takashi3 Browse this author
Hiraishi, Tomonori4 Browse this author →KAKEN DB
Yamamoto, Katsutaro5 Browse this author
Nashimoto, Katsuaki6 Browse this author →KAKEN DB
Authors(alt): 鈴木, 勝也1
高木, 力2
清水, 孝士3
平石, 智徳4
山本, 勝太郎5
梨本, 勝昭6
Keywords: fishing gear
lumped mass model
numerical simulation
supple net
Issue Date: Aug-2003
Publisher: Blackwell Publishing
Journal Title: Fisheries Science
Volume: 69
Issue: 4
Start Page: 695
End Page: 705
Publisher DOI: 10.1046/j.1444-2906.2003.00676.x
Abstract: 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。
The aim of the present study was to develop a numerical calculation method to simulate the three-dimensional dynamic behavior of fishing nets. In a previous study, we presented a formulation to calculate net configurations. In this method, fishing nets were modeled as a group of lumped mass points interconnected with springs that have no mass. To verify the validity of calculation results using a computational model, we performed the flume tank experiments with a rectangular net and compared results with those of the numerical simulation of experiments. Using our 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 with the results of the flume tank experiments. This study shows that our method is valid for the simulation of fishing nets; furthermore, we have resolved earlier problems that were associated with this model.
Rights: © 2003 公益社団法人日本水産学会
© 2003 The Japanese Society of Fisheries Science
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鈴木 勝也

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