Study on a prediciton method for coupling motions of tow and towed ships and the towing cable tension in waves

• Project/Area Number: 23360386
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Naval and maritime engineering
• Research Institution: Hiroshima University
• Principal Investigator: YASUKAWA Hironori 広島大学, 工学(系)研究科(研究院), 教授 (40363022)
• Co-Investigator(Kenkyū-buntansha): TANAKA Susumu 広島大学, 大学院・工学研究院, 准教授 (10207102) ; HIRATA Noritaka 広島大学, 大学院・工学研究院, 助教 (80181163)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2012: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000); Fiscal Year 2011: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
• Keywords: 曳航 / 曳船 / 被曳船 / 索張力 / 波浪動揺 / 理論計算法の開発 / 水槽試験による検証 / 波浪中運動特性の把握 / 水槽試験 / 連星挙動

Research Abstract

A new computer code was developed for the prediction of the motions of tow and towed ships and the towing cable tension in oblique regular waves, by extending the code developed in last year. To obtain the validation data for the code, tank tests were conducted at Seakeeping and Maneuvering Basin, Nagasaki R & D center, Mitsubishi Heavy Industries. By systematic change of the wave-maker's parameters, in the measurements, effects of wave period, wave direction and so on were captured. By means of the code newly developed, calculations were made of the motions of tow and towed ships and the towing cable tension in oblique waves, and the results were compared with the tank test results. As a result, it was confirmed that the calculation results roughly agreed with the tank test results. The present method is useful for practical prediction purposes of towing problems in waves.

Research Products

• [Journal Article] Analysis of an Asymmetrical Bridle Towline Model to Stabilise Towing Performance of a Towed Ship, Jurnal Teknologi (2014)
  • Author(s): Fitriadhy, A., Yasukawa, H., Yoneda, T., Koh, K. K. and Maimun, A
  • Journal Title: Special Edition on Marine Technology Volume: Vol.66, No.2 Pages: 151-156
  • URL: http://www.jurnalteknologi.utm.my/index.php/jurnalteknologi/index
  • Peer Reviewed
• [Journal Article] Analysis of an Asymmetrical Bridle Towline Model to Stabilise Towing Performance of a Towed Ship (2014)
  • Author(s): Fitriadhy, A., Yasukawa, H., Yoneda, T., Koh, K. K. and Maimun, A.
  • Journal Title: Jurnal Teknologi, Special Edition on Marine Technology Volume: Vol.66, No.2 Pages: 151-156
  • Peer Reviewed
• [Journal Article] Course Stability of a Ship Towing System in Wind (2013)
  • Author(s): Fitriadhy, A., Yasukawa, H. and Koh, K. K.
  • Journal Title: Ocean Engineering Volume: Vol.64 Pages: 135-145
  • URL: http://www.sciencedirect.com/science/journal/00298018
  • Peer Reviewed
• [Journal Article] 曳船・被曳船の旋回運動時におこる索のたるみについて (2012)
  • Author(s): 安川宏紀, 平田法隆, 横尾亮介, Fitriadhy, A.
  • Journal Title: 日本船舶海洋工学会論文集 Volume: 第16号 Pages: 41-48
  • NAID: 10031139226
  • URL: https://www.jstage.jst.go.jp/browse/jjasnaoe/-char/ja/
  • Peer Reviewed
• [Journal Article] 正面向波中における曳船・被曳船の船体運動シミュレーション (2012)
  • Author(s): 中山喜之, 安川宏紀, 平田法隆
  • Journal Title: 日本船舶海洋工学会論文集 Volume: 第15号 Pages: 91-100
  • NAID: 10030509692
  • URL: https://www.jstage.jst.go.jp/browse/jjasnaoe/-char/ja/
  • Peer Reviewed
• [Journal Article] 正面向波中における曳船・被曳船の船体運動シミュレーション (2012)
  • Author(s): 中山喜之
  • Journal Title: 日本船舶海洋工学会論文集 Volume: 15 Pages: 91-100
  • Peer Reviewed
• [Journal Article] 曳船・被曳船の旋回運動時におこる索のたるみについて (2012)
  • Author(s): 安川宏紀
  • Journal Title: 日本船舶海洋工学会論文集 Volume: 16 Pages: 41-48
  • NAID: 10031139226
  • Peer Reviewed
• [Presentation] Effect of Asymmetrical Bridle Towline Configuration on Course Stability of a Towed Ship (2012)
  • Author(s): Fitriadhy, A., Yasukawa, H., Yoneda, T. and Koh, K. K.
  • Organizer: Proceedings of the 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro 2012)
  • Place of Presentation: Johor, Malaysia
• [Presentation] Model Experimental Study of a Towed Ship's Motion (2012)
  • Author(s): Zan, U. I., Yasukawa, H., Koh, K. K., and Fitriadhy, A.
  • Organizer: Proceedings of the 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro 2012)
  • Place of Presentation: Johor, Malaysia
• [Presentation] Time Domain Simulation of Wave-Induced Motions of a Towed Ship (2012)
  • Author(s): Nakayama, Y., Yasukawa, H., Hirata, N. and Hata, H.
  • Organizer: Proceedings of the 22nd International Offshore and Polar Engineering Conference
  • Place of Presentation: Rhodes, Greece
• [Presentation] Dynamic interaction of tow and towed ships in head seas (2011)
  • Author(s): Nakayama, Y, Yasukawa, H. and Watanabe, J.
  • Organizer: 2nd Int. Conf. on Ship Manoeuvring in Shallow and Confined Water : Ship to Ship Interaction
  • Place of Presentation: Trondheim, Norway
• [Presentation] Slack towline on Tow-Towed Ships Interaction during Manoeuvring (2011)
  • Author(s): Fitriadhy, A., Yasukawa, H. and Masaki, Y.
  • Organizer: 2nd Int. Conf. on Ship Manoeuvring in Shallow and Confined Water : Ship to Ship Interaction
  • Place of Presentation: Trondheim, Norway