流線形枠による流れに平行な網地の抵抗の測定

• 王 尓光

  大連水産学院

• 松田 皎

  東京水産大学

書誌事項

タイトル別名

• Measurements of the drag of plane netting set parallel to a water flow in a streamlined frame.
• リュウ センケイ ワク ニ ヨル ナガレ ニ ヘイコウ ナ アミジ ノ テイコ

抄録

By using a specially designed streamline frame, the drag of netting parallel to a water flow was measured at a range of values of mesh angle ∅, i.e. the half angle between two adjacent bars. The friction drag coefficient C_f of netting parallel to a flow based on the area of netting varies considerably with the ratio of twine diameter D to bar length L, i.e. D/L, and the mesh angle, while it decreases very slightly with increasce the Reynold's number based on the length of netting. At constant mesh angle, C_f increased linearly with the ratio D/L. The drag coefficient C_f was found to be constant over a range of either D or L, when both the ratio D/L and the mesh angle ∅ were kept constant. Varying the mesh angle ∅ for the same netting, C_f decreased slightly with increasing ∅ up to angles between 20° and 30°, but above 30°C_f increased considerably with ∅. From these experimental results, excepting angles below 20°, the following formula for friction drag coefficient C_f was derived C_f=0.11 √(D/L) tan ∅.

収録刊行物

• 日本水産学会誌

  日本水産学会誌 54 (1), 9-15, 1988

  公益社団法人 日本水産学会

キーワード

• Aquatic Science

詳細情報

• CRID: 1390282681390636544
• NII論文ID: 130001544272
• NII書誌ID: AN00193422
• DOI: 10.2331/suisan.54.9
• ISSN: 1349998X
• ISSN: 00215392
• NDL書誌ID: 3173809
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010370443
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3173809
• 本文言語コード: ja
• データソース種別:
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  • IRDB
  • NDL
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可