JPS58152692A - Method for reducing tugging resistance by eliminating karman vortex in tugging caisson - Google Patents

Method for reducing tugging resistance by eliminating karman vortex in tugging caisson

Info

Publication number
JPS58152692A
JPS58152692A JP57033045A JP3304582A JPS58152692A JP S58152692 A JPS58152692 A JP S58152692A JP 57033045 A JP57033045 A JP 57033045A JP 3304582 A JP3304582 A JP 3304582A JP S58152692 A JPS58152692 A JP S58152692A
Authority
JP
Japan
Prior art keywords
tugging
caisson
resistance
karman vortex
eliminating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP57033045A
Other languages
Japanese (ja)
Inventor
Ken Ando
安藤　建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP57033045A priority Critical patent/JPS58152692A/en
Publication of JPS58152692A publication Critical patent/JPS58152692A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PURPOSE:To eliminate Karman vortexes and reduce tugging resistance, by fitting a sheet to a place where a karman vortex would otherwise be generated, in tugging a caisson. CONSTITUTION:When tugging the caisson 1, the sheet 2 is fitted to each of the places where the Karman vortex would otherwise be generated, such as corner parts of the caisson 2. Accordingly, at the time of tugging, the Karman vortex is prevented from being generated, and resistance is reduced.

Description

【発明の詳細な説明】 本発明はケーソンを曳航する際に発生 するカルマン渦を消去して、曳航抵抗を軽減することに
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to reducing towing resistance by eliminating Karman vortices that occur when towing a caisson.

現行のケーソン曳航では、曳航の際抵抗となる渦は発生
するにまかせている。In the current caisson towing system, vortices that create resistance during towing are allowed to occur.

これに対し、本方法は比の発生する渦 を消去して抵抗を軽減することを特徴 とする。In contrast, in this method, the vortex that generates the ratio It is characterized by reducing resistance by erasing shall be.

以下、本発明に就いて説明する。The present invention will be explained below.

Ｆｉｇ１は現行の状態図で、発生する渦はそのまま発生
するにまかされており、曳航抵抗となっているが、Ｆｉ
ｇ２は改良された本方法で、渦の発生する個所にシート を取付け、流すことによって渦は消去 される。Fig. 1 shows the current state diagram, in which the generated vortices are left to occur as they are, creating towing resistance.
g2 is an improved method of the present invention, in which a sheet is attached to the location where the vortex is generated and the vortex is eliminated by flowing the sheet.

渦が消去されることにより抵抗が軽 減されることにより次の利点がある。The resistance is reduced by eliminating the vortices. This reduction has the following advantages.

（１）速度が早くなり、目的地点なで 　　　速く到着することができる。(1) The speed becomes faster and you reach the destination You can arrive quickly.

（２）その分、工事の行程が短縮できる。(2) The construction process can be shortened accordingly.

（３）燃料の節約になり、曳航費用が 　　　節約できる。(3) Saves fuel and reduces towing costs You can save money.

【図面の簡単な説明】[Brief explanation of drawings]

Ｆｉｇ１は現行の曳航状態 Ｆｉｇ２は本発明による曳航状態 Ｆｉｇ２（１）はケーソン 　　　　（２）はシート Fig1 shows the current towing condition Fig. 2 shows the towed state according to the present invention. Fig2(1) is a caisson (2) is a sheet

Claims (1)

【特許請求の範囲】[Claims] ケーソン曳航において発生するカルマン渦を消去するた
めに渦の発生する個所にシートを取付ける。In order to eliminate the Karman vortex that occurs when towing a caisson, a sheet is installed at the location where the vortex occurs.
JP57033045A 1982-03-04 1982-03-04 Method for reducing tugging resistance by eliminating karman vortex in tugging caisson Pending JPS58152692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57033045A JPS58152692A (en) 1982-03-04 1982-03-04 Method for reducing tugging resistance by eliminating karman vortex in tugging caisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57033045A JPS58152692A (en) 1982-03-04 1982-03-04 Method for reducing tugging resistance by eliminating karman vortex in tugging caisson

Publications (1)

Publication Number Publication Date
JPS58152692A true JPS58152692A (en) 1983-09-10

Family

ID=12375811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57033045A Pending JPS58152692A (en) 1982-03-04 1982-03-04 Method for reducing tugging resistance by eliminating karman vortex in tugging caisson

Country Status (1)

Country Link
JP (1) JPS58152692A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417176A (en) * 1994-07-27 1995-05-23 The United States Of America As Represented By The Secretary Of The Navy Underwater vortex shedder
US7223910B2 (en) 2004-04-19 2007-05-29 Hoshino Gakki Mfg. Co., Ltd. Snare drum
JP2011256705A (en) * 2011-08-08 2011-12-22 Taisei Corp Installation system of columnar structure and installation method of columnar structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417176A (en) * 1994-07-27 1995-05-23 The United States Of America As Represented By The Secretary Of The Navy Underwater vortex shedder
US7223910B2 (en) 2004-04-19 2007-05-29 Hoshino Gakki Mfg. Co., Ltd. Snare drum
JP2011256705A (en) * 2011-08-08 2011-12-22 Taisei Corp Installation system of columnar structure and installation method of columnar structure

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