TW326429B - Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from ship - Google Patents

Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from ship

Info

Publication number
TW326429B
TW326429B TW085115019A TW85115019A TW326429B TW 326429 B TW326429 B TW 326429B TW 085115019 A TW085115019 A TW 085115019A TW 85115019 A TW85115019 A TW 85115019A TW 326429 B TW326429 B TW 326429B
Authority
TW
Taiwan
Prior art keywords
ship
hull
bubbles
frictional resistance
reducing
Prior art date
Application number
TW085115019A
Other languages
Chinese (zh)
Inventor
Yoji Kato
Yoshiaki Takahashi
Ariki Yoshida
Akira Masuko
Osamu Watanabe
Original Assignee
Ishikawajima Harima Henavy Ind Co Ltd
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
Priority claimed from JP8039140A external-priority patent/JPH09207874A/en
Priority claimed from JP14464696A external-priority patent/JP3172094B2/en
Application filed by Ishikawajima Harima Henavy Ind Co Ltd filed Critical Ishikawajima Harima Henavy Ind Co Ltd
Application granted granted Critical
Publication of TW326429B publication Critical patent/TW326429B/en

Links

Classifications

    • 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

  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

A method for reducing frictional-resistance at the hull (2) of a ship (1), characterized in that the method comprises a step of ejecting micro-bubbles (8) having predetermined diameters; in which the micro-bubbles (8) are ejected into water from a position adjacent to the starting point of the desired stream line (F.L.) of the water and from the position where the static pressure is low; the stream line (F.L.) being directed from the submerged shallow position at a stem portion (4) of the ship^s hull (2) to the ship^s bottom (5) along both side surfaces of the ship^s hull (2), so that the ejected micro-bubbles (8) are transferred to the ship^s bottom (5) along the stream line (F.L.); whereby the micro-bubbles (8) are distributed at at least a part of the circumferential area of the submerged portion of the hull (2), thus reducing frictional-resistance at the hull (2) of a ship (1) while cruising.
TW085115019A 1996-02-02 1996-12-05 Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from ship TW326429B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8039140A JPH09207874A (en) 1996-02-02 1996-02-02 Micro-bubble generation device
JP14464696A JP3172094B2 (en) 1996-06-06 1996-06-06 Analysis method of bubbly bubbles in ships

Publications (1)

Publication Number Publication Date
TW326429B true TW326429B (en) 1998-02-11

Family

ID=58262245

Family Applications (1)

Application Number Title Priority Date Filing Date
TW085115019A TW326429B (en) 1996-02-02 1996-12-05 Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from ship

Country Status (1)

Country Link
TW (1) TW326429B (en)

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