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DE10140781A1 - Friction resistance reducing process involves supplying gas through channels to outlet jets below waterline - Google Patents

Friction resistance reducing process involves supplying gas through channels to outlet jets below waterline

Info

Publication number
DE10140781A1
DE10140781A1 DE10140781A DE10140781A DE10140781A1 DE 10140781 A1 DE10140781 A1 DE 10140781A1 DE 10140781 A DE10140781 A DE 10140781A DE 10140781 A DE10140781 A DE 10140781A DE 10140781 A1 DE10140781 A1 DE 10140781A1
Authority
DE
Germany
Prior art keywords
channels
gas
hull
friction resistance
process involves
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.)
Ceased
Application number
DE10140781A
Other languages
German (de)
Inventor
Stephan Preus
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
Priority claimed from DE10053453A external-priority patent/DE10053453A1/en
Application filed by Individual filed Critical Individual
Priority to DE10140781A priority Critical patent/DE10140781A1/en
Publication of DE10140781A1 publication Critical patent/DE10140781A1/en
Ceased 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
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • 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)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Abstract

The friction resistance of a ship's hull as the ship passes through the water can be reduced by partly covering the hull with a thin layer of air or other gas. This is done by running gas channels through the hull to gas outlet jets. The gas can be supplied by means of negative pressure or by a compressor. The process can be applied to existing ships by retrofitting the channel system.

Description

Für bereits existierende Schiffs- bzw. Bootsrümpfe kann sich der Einbau der Gasaustrittsdüsen und der Versorgungsleitungen in den Rumpf recht aufwendig gestalten, so daß sich eine Lösung des Problems mit außen auf dem Rumpf angebrachten Gaskanälen anbietet. Diese Kanäle mit den Gasaustrittsdüsen werden vorwiegend im Unterwasserbereich unter Beachtung der Strömungsverhältnisse am Rumpf des Wasserfahrzeuges befestigt. Die Versorgung mit Gas erfolgt nach den bereits beschriebenen Methoden in erster Linie vom Hauptdeck des Wasserfahrzeuges. For existing ship or boat hulls, the installation of the Design the gas outlet nozzles and the supply lines in the fuselage quite complex, see above that a solution to the problem with outside gas channels on the fuselage offering. These channels with the gas outlet nozzles are mainly in the underwater area attached to the hull of the watercraft taking into account the current conditions. The The gas supply is primarily carried out by the method already described Main deck of the watercraft.

Ein Ausführungsbeispiel soll die Erfindung näher erläutern: An exemplary embodiment is intended to explain the invention in more detail:

Dazu zeigt Fig. 1 das Prinzip der außen an einem Schiffs- oder Bootsrumpf befestigten Gaskanäle mit den Gasaustrittsdüsen. 1 by FIG., The principle of the fixed externally on a vessel or boat hull gas channels with the gas outlet nozzle.

Claims (2)

1. Verfahren zur Verminderung des Reibungswiderstandes bei Wasserfahrzeugen, dadurch gekennzeichnet, daß zwischen dem Rumpf und dem umgebenden Wasser eine dünne Gasschicht eingebracht wird, die den im Wasser befindlichen Teil des Rumpfes teilweise oder vollständig bedeckt. 1. A method for reducing the frictional resistance in watercraft, characterized in that a thin gas layer is introduced between the hull and the surrounding water, which partially or completely covers the part of the hull located in the water. 2. Verfahren zur Verminderung des Reibungswiderstandes bei Wasserfahrzeugen nach Anspruch 1, dadurch gekennzeichnet,
daß die Gasaustrittsdüsen an gasführenden Kanälen angebracht sind, die außen am Bootsrumpf im Unterwasserbereich befestigt sind und das Gas bzw. Luft über der Wasseroberfläche ansaugen,
daß mehrere Kanäle über den Bootsrumpf verteilt sind. 2. A method for reducing the frictional resistance in watercraft according to claim 1, characterized in that
that the gas outlet nozzles are attached to gas-carrying channels, which are attached to the outside of the boat hull in the underwater area and suck in the gas or air above the water surface,
that several channels are distributed over the hull.
DE10140781A 2000-10-23 2001-08-18 Friction resistance reducing process involves supplying gas through channels to outlet jets below waterline Ceased DE10140781A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10140781A DE10140781A1 (en) 2000-10-23 2001-08-18 Friction resistance reducing process involves supplying gas through channels to outlet jets below waterline

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10053453A DE10053453A1 (en) 2000-10-23 2000-10-23 Friction reduction for watercraft and ships ejects gas from nozzles on submerged hull to form thin gas film between hull and water.
DE10140781A DE10140781A1 (en) 2000-10-23 2001-08-18 Friction resistance reducing process involves supplying gas through channels to outlet jets below waterline

Publications (1)

Publication Number Publication Date
DE10140781A1 true DE10140781A1 (en) 2003-02-27

Family

ID=26007514

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10140781A Ceased DE10140781A1 (en) 2000-10-23 2001-08-18 Friction resistance reducing process involves supplying gas through channels to outlet jets below waterline

Country Status (1)

Country Link
DE (1) DE10140781A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258495B4 (en) * 2002-12-14 2007-03-01 Buchert, Jürgen Friction reduction drive for watercraft by turbine
DE102007053645A1 (en) * 2007-11-08 2009-05-14 Häußer, Achim Air blowing hull for use in ship, has air blowing like absorbing pads, and openings provided under water line, where air leaks out through openings, and air forms intermediate zone between hull and water
DE102008057601B4 (en) * 2008-11-13 2011-06-30 Klinck, Ernst Günter, 25704 Device for reducing the water resistance of ships
CN112918614A (en) * 2021-01-22 2021-06-08 中国人民解放军国防科技大学 Supercavitation navigation body and cavitation bubble flow control method adopting wake flow injection

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258495B4 (en) * 2002-12-14 2007-03-01 Buchert, Jürgen Friction reduction drive for watercraft by turbine
DE102007053645A1 (en) * 2007-11-08 2009-05-14 Häußer, Achim Air blowing hull for use in ship, has air blowing like absorbing pads, and openings provided under water line, where air leaks out through openings, and air forms intermediate zone between hull and water
DE102008057601B4 (en) * 2008-11-13 2011-06-30 Klinck, Ernst Günter, 25704 Device for reducing the water resistance of ships
CN112918614A (en) * 2021-01-22 2021-06-08 中国人民解放军国防科技大学 Supercavitation navigation body and cavitation bubble flow control method adopting wake flow injection
CN112918614B (en) * 2021-01-22 2022-03-29 中国人民解放军国防科技大学 Supercavitating vehicle and its cavitation flow control method using wake ejection

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