US20070018055A1 - Aerodynamically efficient surface - Google Patents

Aerodynamically efficient surface Download PDF

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Publication number
US20070018055A1
US20070018055A1 US11/484,212 US48421206A US2007018055A1 US 20070018055 A1 US20070018055 A1 US 20070018055A1 US 48421206 A US48421206 A US 48421206A US 2007018055 A1 US2007018055 A1 US 2007018055A1
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United States
Prior art keywords
wave
tile
air
wave form
tubular
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.)
Abandoned
Application number
US11/484,212
Inventor
Eric Schmidt
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to US11/484,212 priority Critical patent/US20070018055A1/en
Publication of US20070018055A1 publication Critical patent/US20070018055A1/en
Priority to US13/104,714 priority patent/US8315847B1/en
Priority to US13/654,629 priority patent/US8556215B1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/10—Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/10—Influencing flow of fluids around bodies of solid material
    • F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/26—Boundary layer controls by using rib lets or hydrophobic surfaces
    • 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
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/10—Drag reduction

Definitions

  • the present invention relates generally to the field of fluid dynamic drag reduction. More specifically, the present invention pertains to techniques or devices for regulating the flow of air or water passing over a surface to reduce exposure or drag.
  • the object of the present invention is to orchestrate and direct the flow between a solid surface and an adjacent fluid medium in relative motion.
  • the present invention has further intention to shed a fluid medium from a solid surface more efficiently, through the use of tiles comprised of wave forms to be applied in both macro and micro levels of organization.
  • the present invention has applications in all areas of fluid management including, but not limited to: vehicular surfaces, wheels of all types, internal combustion intake and exhaust systems, H.V.A.C. systems, and architectural air and water shedding applications.
  • FIG. 1 is a view of (photograph) multiple tiles of the devices of the present invention, from the perspective of an approaching air molecule.
  • FIG. 2 shows a tile with four wave forms, like those employed in FIG. 1 from a reverse angle perspective view.
  • FIG. 3 is a perspective, side angle view of the tiles.
  • FIG. 4 a ), b) & c) show wave forms of a surface of a body of water at a) no wind speed, b) medium wind speed, and c) high wind speed.
  • FIG. 4 d shows one scenario of air/water movement over the wave panels of the present invention.
  • FIG. 5 shows two embodiments of the present invention.
  • FIG. 6 shows an elevation drawing of a wave form tile that would be applied to a 90° corner, like that on a semi-trailer.
  • FIG. 7 shows a wave form tile the shape of a drip.
  • FIG. 8 shows a wave form tile the shape of a drip bent 90°.
  • FIG. 9 shows a semi-trailer covered in wave tile forms.
  • FIG. 10, 11 , and 12 shows three possible wave forms wrapped around a fuselage shape.
  • FIG. 13 shows a wave form tile on a pick-up truck bed.
  • FIG. 14 shows the wave form tile pattern on a circular wheel shape.
  • the design of the present invention has many aerodynamic advantages over the prior art surfaces. Especially when used on the exterior surface of a vehicle.
  • FIG. 1 is a perspective view of (photograph) multiple sheets of the devices of the present invention. As you can see the independent sheets are arranged to create an irregular surface of organized waves which are usable on a vehicle or other device that travels through the air (or water), as well as devices used for management of a fluid, such as an air duct.
  • FIG. 2 shows a multi-wave tile 10 .
  • the individual tile 10 comprises four waved portions 20 , 30 , 28 , and 32 .
  • Each of waves 20 , 30 , 28 , and 32 act to manage a fluid, e.g. air as it travels across the entire tile on the exterior surfaces of the vehicle or like device. (not shown)
  • the airflow across tile 10 will now be discussed. As it is disposed on the vehicle (or other device) the air will be caused to flow from a forward corner 34 to a rear comer 44 across tiles, 20 , 30 , 28 and 32 . As the air travels across the surface of tile 10 , from corner 34 , it will first engage the upper surfaces of wave 20 .
  • Relative motion of the entire device through the air will cause pressures in and around area 22 to be relatively higher than the areas of high wind exposure due to shielding or protection from the faster moving air.
  • This elevation, or pooling, of pressurized air shields the surfaces of the tile from being directly contacted by the air traveling across the tile when the vehicle is in motion. Instead of engaging the tile surfaces, the lower pressure traversing air is repelled by the pressurized air.
  • This air-to-air contact creates less drag than what would be air to vehicle surface contact with a conventionally smooth design. Therefore, drag is decreased and the vehicle travels with more aerodynamic efficiency.
  • the tile described in the present invention could easily be inverted and rotated 180 degrees, with area 22 in FIG. 2 becoming the highest point of lowest pressure, and with 36 in FIG. 2 becoming a recessed high pressure zone.
  • High pressure pockets may also be built into a surface by constructing wave forms perpendicular to the flow of encountered fluid, like that of a shelf cloud on the front of a storm, preferably with an alternate undulation as FIG. 1, 2 and 5 a .
  • the perpendicular wave form can be simplified to a continuous ring, of repeating wave forms as illustrated in FIG. 11 , also including the recessed tubular wave form.
  • the tubular wave shaped cavity interlocks with adjacent air forming a yin yang situation.

Abstract

A Tile, in the form of a natural wave, is provided to replace traditionally smooth surfaces to aid in more efficient shedding of a fluid medium.

Description

    Claims benefit of Provisional App. #60/698,454 filed Jul. 11, 2005 STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
  • None.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates generally to the field of fluid dynamic drag reduction. More specifically, the present invention pertains to techniques or devices for regulating the flow of air or water passing over a surface to reduce exposure or drag.
  • 2. Description of the Related Art
  • The invention of the wheel started a movement to seek efficiency through less friction. Elimination of drag in motion is one answer to efficiency U.S. Pat. No. 5,114,099 (Gao et al.) shows a series of wavelets in a diamond pattern with a ridge lengthwise and convex sloping sides from the ridge, however does not teach the use of waves with breaks or tubular cavities. Nor does Gao teach the use of a wave panel the shape of a drip.
  • U.S. Pat. No. 2,800,291 (Stephens et.al) claims benefit to an excrescence which is basically triangular vortex generators with a hard edge, in essence produces a square wave which results in distortion or drag. The present invention provides a natural tubular wave on the backside of the wave form tile, allowing for a smoothly orchestrated transition forward to aft.
    • SUMMARY OF THE INVENTION
  • The object of the present invention is to orchestrate and direct the flow between a solid surface and an adjacent fluid medium in relative motion. The present invention has further intention to shed a fluid medium from a solid surface more efficiently, through the use of tiles comprised of wave forms to be applied in both macro and micro levels of organization. The present invention has applications in all areas of fluid management including, but not limited to: vehicular surfaces, wheels of all types, internal combustion intake and exhaust systems, H.V.A.C. systems, and architectural air and water shedding applications.
    • BRIEF DESCRIPTIONS OF THE DRAWINGS
  • FIG. 1 is a view of (photograph) multiple tiles of the devices of the present invention, from the perspective of an approaching air molecule.
  • FIG. 2 shows a tile with four wave forms, like those employed in FIG. 1 from a reverse angle perspective view.
  • FIG. 3 is a perspective, side angle view of the tiles.
  • FIG. 4 a), b) & c) show wave forms of a surface of a body of water at a) no wind speed, b) medium wind speed, and c) high wind speed. FIG. 4 d) shows one scenario of air/water movement over the wave panels of the present invention.
  • FIG. 5 shows two embodiments of the present invention.
  • FIG. 6 shows an elevation drawing of a wave form tile that would be applied to a 90° corner, like that on a semi-trailer.
  • FIG. 7 shows a wave form tile the shape of a drip.
  • FIG. 8 shows a wave form tile the shape of a drip bent 90°.
  • FIG. 9 shows a semi-trailer covered in wave tile forms.
  • FIG. 10, 11, and 12 shows three possible wave forms wrapped around a fuselage shape.
  • FIG. 13 shows a wave form tile on a pick-up truck bed.
  • FIG. 14 shows the wave form tile pattern on a circular wheel shape.
    • DETAILED DESCRIPTION OF THE INVENTION
  • Disclosed is one embodiment for the present invention. It will be clear to one skilled in the art that numerous other embodiments and/or uses for the disclosed technologies are possible which would fall within the scope and spirit of those embodiments specified herein.
  • The design of the present invention has many aerodynamic advantages over the prior art surfaces. Especially when used on the exterior surface of a vehicle.
  • The specifics may best be understood by referencing the attached photographs of one possible variation of a wave form tile.
  • FIG. 1 is a perspective view of (photograph) multiple sheets of the devices of the present invention. As you can see the independent sheets are arranged to create an irregular surface of organized waves which are usable on a vehicle or other device that travels through the air (or water), as well as devices used for management of a fluid, such as an air duct.
  • FIG. 2 shows a multi-wave tile 10. The individual tile 10 comprises four waved portions 20, 30, 28, and 32. Each of waves 20, 30, 28, and 32 act to manage a fluid, e.g. air as it travels across the entire tile on the exterior surfaces of the vehicle or like device. (not shown) The airflow across tile 10 will now be discussed. As it is disposed on the vehicle (or other device) the air will be caused to flow from a forward corner 34 to a rear comer 44 across tiles, 20, 30, 28 and 32. As the air travels across the surface of tile 10, from corner 34, it will first engage the upper surfaces of wave 20. When it engages the upper surfaces of this wave, it will be managed such that it is disbursed from the general area of the forward crest 36 of the wave 20. The air is guided by linear crest edges 38 and 40 and is then directed towards and is united at some point proximate crest 36 and above a point 22. The air once focused in this fashion, travels across tile 28 in a more focused relationship, producing channels of air-flow versus sheets of air in a smooth-surface situation.
  • When reviewed as a vertical surface, one skilled in the art can visualize water running down wave 20, clinging to drip edges 38 and 40, uniting at point 36, becoming one solid stream. The solid stream of water will then merge with wave 28 proximate its' mid-point, remaining concentrated, passing over wave 28 and disbursing from wave 28 in a similar fashion as it did wave 20 leaving areas such as 22 untouched by water. Air and water are fluids alike and will react similarly.
  • Relative motion of the entire device through the air (e.g., on the outside surfaces of a vehicle or airplane) will cause pressures in and around area 22 to be relatively higher than the areas of high wind exposure due to shielding or protection from the faster moving air. This elevation, or pooling, of pressurized air shields the surfaces of the tile from being directly contacted by the air traveling across the tile when the vehicle is in motion. Instead of engaging the tile surfaces, the lower pressure traversing air is repelled by the pressurized air. This air-to-air contact creates less drag than what would be air to vehicle surface contact with a conventionally smooth design. Therefore, drag is decreased and the vehicle travels with more aerodynamic efficiency. Of the numerous embodiments, the tile described in the present invention could easily be inverted and rotated 180 degrees, with area 22 in FIG. 2 becoming the highest point of lowest pressure, and with 36 in FIG. 2 becoming a recessed high pressure zone. High pressure pockets may also be built into a surface by constructing wave forms perpendicular to the flow of encountered fluid, like that of a shelf cloud on the front of a storm, preferably with an alternate undulation as FIG. 1, 2 and 5 a. The perpendicular wave form can be simplified to a continuous ring, of repeating wave forms as illustrated in FIG. 11, also including the recessed tubular wave form.
  • As relative wind speed increases, so does the surface are of the fluid, as seen in FIG. 4, w/crest being pulled leeward to the point the tip breaks off and becomes water vapor. This is the physical molecular representation of liquid becoming gas. The point at which the wave begins to break, a cavity, is formed, producing a high-pressure area/zone or cell.
  • The tubular wave shaped cavity interlocks with adjacent air forming a yin yang situation.
  • Through mimicking shapes in this naturally occurring relationship between fluids, we are able to achieve a natural; friendly interface between solids and fluids, by shaping the solid to resemble that of a fluid.

Claims (8)

1. A wave form tile for the use of controlling a fluid while interacting immediately with the tile, comprised of a natural wave form with a crest and a break, forming a tubular wave form cavity extending the length of one side.
2. The wave form in claim 1, with tubular wave cavities extending around two or more sides.
3. A wave form tile with a droplet form 90° to the surface.
4. The wave form in claim 3 with the droplet form oriented parallel to the surface of the tile.
5. The form in claim 1 with the ends of the tubular cavity terminating in a vanishing point.
6. The inverse profile of the wave forms in claims 1 and 2.
7. The inverse profile of the wave forms mentioned in claims 3 and 4.
8. The inverse profile of the wave form mentioned in claim 5.
US11/484,212 2005-07-11 2006-07-11 Aerodynamically efficient surface Abandoned US20070018055A1 (en)

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US13/104,714 US8315847B1 (en) 2005-07-11 2011-05-10 Aerodynamically efficient surfaces
US13/654,629 US8556215B1 (en) 2005-07-11 2012-10-18 Aerodynamically efficient surfaces

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US11/484,212 US20070018055A1 (en) 2005-07-11 2006-07-11 Aerodynamically efficient surface

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070194178A1 (en) * 2006-02-21 2007-08-23 Amy Warncke Lang Passive micro-roughness array for drag modification
WO2008136697A1 (en) * 2007-05-04 2008-11-13 Siemens Aktiengesellschaft Method and apparatus for flow control of a gas
US20100108813A1 (en) * 2007-03-30 2010-05-06 Lang Amy W passive drag modification system
US20100219296A1 (en) * 2008-11-01 2010-09-02 Alexander J. Shelman-Cohen Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils
US20100301172A1 (en) * 2008-02-29 2010-12-02 Airbus Uk Limited Aerodynamic structure with series of shock bumps
US20100301173A1 (en) * 2008-02-29 2010-12-02 Wood Norman Aerodynamic structure with asymmetrical shock bump
US20100301171A1 (en) * 2008-02-29 2010-12-02 Wood Norman Shock bump array
US20100308176A1 (en) * 2008-02-29 2010-12-09 Wood Norman Aerodynamic structure with non-uniformly spaced shock bumps
US20100314500A1 (en) * 2008-02-29 2010-12-16 Wood Norman Shock bump
US20110114794A1 (en) * 2009-11-19 2011-05-19 Boze Calvin B Environmental compression for friction reduction
WO2013134657A1 (en) * 2012-03-08 2013-09-12 The University Of Alabama A passive drag modification system
EP2639462A1 (en) * 2012-03-15 2013-09-18 Peter Adrian Leitl Rotary body with a friction reduction surface and method for producing the same
US8556215B1 (en) 2005-07-11 2013-10-15 Eric Thomas Schmidt Aerodynamically efficient surfaces
US9327462B2 (en) 2010-10-20 2016-05-03 Pepsico, Inc. Control of bubble size in a carbonated liquid
US10352171B2 (en) 2008-11-01 2019-07-16 Alexander J. Shelman-Cohen Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils
US20210146291A1 (en) * 2019-11-14 2021-05-20 Paul NEISER Filtration apparatus and method
US20220290699A1 (en) * 2021-03-15 2022-09-15 Bruce Preston Williams Multi Functional Microstructured Surface Development Three Dimensional Form Solutions in Individual Tile and Multiple Tile Array Configurations

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EP2885206A4 (en) * 2012-08-16 2016-03-16 Adelaide Res &Innovation Pty Ltd Improved wing configuration
WO2017075860A1 (en) * 2015-11-06 2017-05-11 朱晓义 Levitation train and running system therefor
WO2017075861A1 (en) * 2015-11-06 2017-05-11 朱晓义 Levitation automobile
JP7335767B2 (en) * 2019-09-30 2023-08-30 株式会社Subaru rectifier
CN113602369A (en) * 2021-02-10 2021-11-05 唐腊辉 Ultrasonic airflow cutting resistance reducing device for vehicle

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US8556215B1 (en) 2005-07-11 2013-10-15 Eric Thomas Schmidt Aerodynamically efficient surfaces
US8113469B2 (en) * 2006-02-21 2012-02-14 University Of Alabama Passive micro-roughness array for drag modification
US20070194178A1 (en) * 2006-02-21 2007-08-23 Amy Warncke Lang Passive micro-roughness array for drag modification
US20100108813A1 (en) * 2007-03-30 2010-05-06 Lang Amy W passive drag modification system
US8794574B2 (en) * 2007-03-30 2014-08-05 The Board Of Trustees Of The University Of Alabama Micro-array surface for passive drag modification
WO2008136697A1 (en) * 2007-05-04 2008-11-13 Siemens Aktiengesellschaft Method and apparatus for flow control of a gas
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US20100301172A1 (en) * 2008-02-29 2010-12-02 Airbus Uk Limited Aerodynamic structure with series of shock bumps
US20100314500A1 (en) * 2008-02-29 2010-12-16 Wood Norman Shock bump
CN101970294A (en) * 2008-02-29 2011-02-09 空中客车英国有限公司 Aerodynamic structure with asymmetrical shock bump
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US20100308176A1 (en) * 2008-02-29 2010-12-09 Wood Norman Aerodynamic structure with non-uniformly spaced shock bumps
US20100301173A1 (en) * 2008-02-29 2010-12-02 Wood Norman Aerodynamic structure with asymmetrical shock bump
RU2502640C2 (en) * 2008-02-29 2013-12-27 ЭЙРБАС ЮКей ЛИМИТЕД Structure with asymmetric ledge for compression shock structure changing
US10352171B2 (en) 2008-11-01 2019-07-16 Alexander J. Shelman-Cohen Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils
US20140255205A1 (en) * 2008-11-01 2014-09-11 Alexander J. Shelman-Cohen Reduced Drag System for Windmills, Fans, Propellers, Airfoils and Hydrofoils
US20100219296A1 (en) * 2008-11-01 2010-09-02 Alexander J. Shelman-Cohen Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils
US10001015B2 (en) * 2008-11-01 2018-06-19 Alexander J. Shelman-Cohen Drag reduction systems having fractal geometry/geometrics
US20110114794A1 (en) * 2009-11-19 2011-05-19 Boze Calvin B Environmental compression for friction reduction
US9327462B2 (en) 2010-10-20 2016-05-03 Pepsico, Inc. Control of bubble size in a carbonated liquid
US10501259B2 (en) 2010-10-20 2019-12-10 Pepsico, Inc. Control of bubble size in a carbonated liquid
WO2013134657A1 (en) * 2012-03-08 2013-09-12 The University Of Alabama A passive drag modification system
EP2639462A1 (en) * 2012-03-15 2013-09-18 Peter Adrian Leitl Rotary body with a friction reduction surface and method for producing the same
US20210146291A1 (en) * 2019-11-14 2021-05-20 Paul NEISER Filtration apparatus and method
WO2021133480A1 (en) * 2019-11-14 2021-07-01 Neiser Paul Filtration apparatus and method
US20220290699A1 (en) * 2021-03-15 2022-09-15 Bruce Preston Williams Multi Functional Microstructured Surface Development Three Dimensional Form Solutions in Individual Tile and Multiple Tile Array Configurations
US11815111B2 (en) * 2021-03-15 2023-11-14 Bruce Preston Williams Multi-functional microstructured surface development three dimensional form solutions in individual tile and multiple tile array configurations

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