WO2014109670A3 - Method and apparatus for achieving laminar flow of gas or liquid near cutting edges - Google Patents

Method and apparatus for achieving laminar flow of gas or liquid near cutting edges Download PDF

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Publication number
WO2014109670A3
WO2014109670A3 PCT/RU2013/001035 RU2013001035W WO2014109670A3 WO 2014109670 A3 WO2014109670 A3 WO 2014109670A3 RU 2013001035 W RU2013001035 W RU 2013001035W WO 2014109670 A3 WO2014109670 A3 WO 2014109670A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas
aerodynamic
cutting edges
laminar flow
term
Prior art date
Application number
PCT/RU2013/001035
Other languages
French (fr)
Other versions
WO2014109670A2 (en
Inventor
Nikolay Alekseevich TRUBAEV
Original Assignee
Trubaev Nikolay Alekseevich
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 Trubaev Nikolay Alekseevich filed Critical Trubaev Nikolay Alekseevich
Priority to PCT/RU2013/001035 priority Critical patent/WO2014109670A2/en
Publication of WO2014109670A2 publication Critical patent/WO2014109670A2/en
Publication of WO2014109670A3 publication Critical patent/WO2014109670A3/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C21/00Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/10Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06Rotors
    • F03D1/0608Rotors characterised by their aerodynamic shape
    • F03D1/0633Rotors characterised by their aerodynamic shape of the blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15DFLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00Influencing flow of fluids
    • F15D1/10Influencing flow of fluids around bodies of solid material
    • F15D1/12Influencing flow of fluids around bodies of solid material by influencing the boundary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/06Shape of fore part
    • B63B1/063Bulbous bows
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/36Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using mechanical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C2230/00Boundary layer controls
    • B64C2230/26Boundary layer controls by using rib lets or hydrophobic surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00Geometry
    • F05B2250/60Structure; Surface texture
    • F05B2250/61Structure; Surface texture corrugated
    • F05B2250/611Structure; Surface texture corrugated undulated
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00Aeronautics or air transport
    • Y02T50/10Drag reduction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00Maritime or waterways transport
    • Y02T70/10Measures concerning design or construction of watercraft hulls

Abstract

The invention relates to an apparatus for reducing turbulent drag, especially in aircraft and watercraft. The forms of surfaces are described, which delay or prevent boundary layer separation without creating an undesirable drag penalty. These forms can be used for turbulent drag reduction of surfaces in a flow of gas or liquid, for example, for inner surface of a tube. This invention relates to aerodynamic and hydrodynamic components having leading edge devices for the improvement of performance, for example, for construction of bulbous bows for bulk carriers. The term "aerodynamic and hydrodynamic component" is used herein to encompass structures having an airfoil or hydrofoil section and leading edge. This term is intended to include wings, fins, tailplanes, canards, engine components such as turbine and compressor blades, propeller blades, helicopter rotor blades, and similar items.
PCT/RU2013/001035 2013-11-19 2013-11-19 Method and apparatus for achieving laminar flow of gas or liquid near cutting edges WO2014109670A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2013/001035 WO2014109670A2 (en) 2013-11-19 2013-11-19 Method and apparatus for achieving laminar flow of gas or liquid near cutting edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2013/001035 WO2014109670A2 (en) 2013-11-19 2013-11-19 Method and apparatus for achieving laminar flow of gas or liquid near cutting edges

Publications (2)

Publication Number Publication Date
WO2014109670A2 WO2014109670A2 (en) 2014-07-17
WO2014109670A3 true WO2014109670A3 (en) 2014-10-23

Family

ID=51167486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2013/001035 WO2014109670A2 (en) 2013-11-19 2013-11-19 Method and apparatus for achieving laminar flow of gas or liquid near cutting edges

Country Status (1)

Country Link
WO (1) WO2014109670A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112977713B (en) * 2021-04-07 2021-12-21 浙江海洋大学 Vortex generator for propeller type ship and ship

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992005341A1 (en) * 1990-09-14 1992-04-02 Josef Moser Rotor
DE4208751A1 (en) * 1992-02-27 1993-11-11 Fritz Karl Hausser Reducing resistance to aerofoil or hydrofoil passing through medium e.g. air or water - uses array of teeth formed on leading and/or trailing edge of aerofoil or hydrofoil section
RU2294300C2 (en) * 2005-03-22 2007-02-27 Институт теоретической и прикладной механики СО РАН (ИТПМ СО РАН) Lifting surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992005341A1 (en) * 1990-09-14 1992-04-02 Josef Moser Rotor
DE4208751A1 (en) * 1992-02-27 1993-11-11 Fritz Karl Hausser Reducing resistance to aerofoil or hydrofoil passing through medium e.g. air or water - uses array of teeth formed on leading and/or trailing edge of aerofoil or hydrofoil section
RU2294300C2 (en) * 2005-03-22 2007-02-27 Институт теоретической и прикладной механики СО РАН (ИТПМ СО РАН) Lifting surface

Also Published As

Publication number Publication date
WO2014109670A2 (en) 2014-07-17

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