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Surface for low drag in turbulent flow 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B64C-021/10
출원번호 US-0532864 (1990-06-04)
발명자 / 주소
  • Gao Ge (Boca Raton FL)
출원인 / 주소
  • Chow
  • W. L. (Boca Raton FL 04)
인용정보 피인용 횟수 : 50  인용 특허 : 0

초록

A nonsmooth surface of an object in a fluid flowstream permits a reduction of turbulent drag. The surface shape is designed to approximate a minimal surface and satisfies the equation (Vㆍ∇)∇FF

대표청구항

A low drag element in the presence of a fluid where there is relative fluid flow between said element and said fluid, said element comprising: a nonsmooth surface, approximating a minimal surface, which satisfies the equation (Vㆍ∇)∇F0, where V is the relative velocity between the fluid and the surfa

이 특허를 인용한 특허 (50)

  1. Raskob ; Jr. Anthony William, Active turbulence control technique for drag reduction.
  2. Butler, Joshua, Aerodynamic and protective vehicle panel assembly and method of constructing same.
  3. Schmidt, Eric Thomas, Aerodynamically efficient surfaces.
  4. Schmidt, Eric Thomas, Aerodynamically efficient surfaces.
  5. Tangler James L. ; Somers Dan M., Airfoils for wind turbine.
  6. Enthammer, Walter, Blade for a turbomachine.
  7. Brosseau, Jon Andrew, Braced fairing for drag and vibration reduction of round tubing.
  8. Riggins, David W., Drag reduction utilizing driven micro-cavities.
  9. Van Merksteijn, Jacobus Lambertus, Friction resistance reducing layer.
  10. Bacon, Andrew, Fuel efficiency of road vehicles.
  11. Krastel Norman W., Gas or fluid de-organizers for moving objects.
  12. Sullivan, Michael J., Golf ball dimples.
  13. Sullivan, Michael J., Golf ball dimples.
  14. Sullivan, Michael J.; Morgan, William E.; Boehm, Herbert C., Golf ball with dimples having constant depth.
  15. Sullivan, Michael J.; Morgan, William E.; Boehm, Herbert C., Golf ball with dimples having constant depth.
  16. Sullivan,Michael J., Golf ball with non-circular dimples.
  17. Rainous, Edward Atwood; Allmon, Barry Lynn; Loewe, Jeffre Gerry; Brooks, William Clarke; Blanton, Lee Alan; Tudor, Courtney James; Budinger, Vicky Showalter, Ice shed reduction for leading edge structures.
  18. Conners, Timothy R.; Henne, Preston A.; Howe, Donald C., Isentropic compression inlet for supersonic aircraft.
  19. Conners, Timothy R.; Howe, Donald C.; Henne, Preston A., Isentropic compression inlet for supersonic aircraft.
  20. Henne, Preston A.; Conners, Timothy R.; Howe, Donald C., Isentropic compression inlet for supersonic aircraft.
  21. Henne, Preston A.; Conners, Timothy R.; Howe, Donald C., Isentropic compression inlet for supersonic aircraft.
  22. Conners, Timothy R., Low shock strength inlet.
  23. Conners, Timothy R., Low shock strength inlet.
  24. Conners, Timothy R., Low shock strength propulsion system.
  25. Conners, Timothy R., Low shock strength propulsion system.
  26. Li, Ming; Marinelli, James M.; Liu, Jiantao; Magnusen, Paul E.; Sheu, Simon; Heinimann, Markus B.; Liu, John; Vega, Luis Fanor, Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same.
  27. Li, Ming; Marinelli, James M.; Liu, Jiantao; Magnusen, Paul E.; Sheu, Simon; Heinimann, Markus B.; Liu, John; Vega, Luis Fanor, Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same.
  28. Li, Ming; Marinelli, James M.; Liu, Jiantao; Magnusen, Paul E.; Sheu, Simon; Heinimann, Markus B.; Liu, John; Vega, Luis Fanor, Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same.
  29. Jacobs David L. ; Eagen Eric L. ; Rogers Jeffrey J., Method and system for reducing drag on the movement of bluff bodies through a fluid medium and increasing heat transfer.
  30. Jacobs David L. ; Eagen Eric L. ; Rogers Jeffrey J., Method and system for reducing drag on the movement of bluff bodies through a fluid medium and increasing heat transfer.
  31. Jacobs David L. ; Eagen Eric L. ; Rogers Jeffrey J., Method and system for reducing drag on the movement of bluff bodies through a fluid medium and increasing heat transfer.
  32. Whitmore, Stephen A.; Saltzman, Edwin J.; Moes, Timothy R.; Iliff, Kenneth W., Method for reducing the drag of blunt-based vehicles by adaptively increasing forebody roughness.
  33. Sirovich Lawrence (New York NY) Levich Evgene (Tel-Aviv ILX) Bronicki Lucien Y. (Yavne ILX), Method of and apparatus for controlling turbulence in boundary layer and other wall-bounded fluid flow fields.
  34. Lang, Amy W., Micro-array surface for passive drag modification.
  35. Lang, Amy Warncke, Passive micro-roughness array for drag modification.
  36. Domel, Neal D.; Baruzzini, Dan J.; Miller, Daniel N., Passive robust flow control micro device.
  37. Bonnet, Laurent, Rotor blade for a wind turbine having aerodynamic feature elements.
  38. Philip Watts ; Frank E. Fish, Scalloped wing leading edge.
  39. Henne, Preston A.; Conners, Timothy R.; Howe, Donald C., Supersonic aircraft jet engine installation.
  40. Henne, Preston A.; Howe, Donald C.; Wolz, Robert R.; Hancock, Jr., Jimmy L., Supersonic aircraft with spike for controlling and reducing sonic boom.
  41. Henne, Preston A.; Howe, Donald C.; Wolz, Robert R.; Hancock, Jr., Jimmy L., Supersonic aircraft with spike for controlling and reducing sonic boom.
  42. Drews Hilbert F. P., Surface modification apparatus and method for decreasing the drag or retarding forces created by fluids flowing across a.
  43. Zhu, Xiaoyi, Suspension automobile.
  44. Nastasi Richard F. ; Soeder Walter S., Swept-back wings with airflow channeling.
  45. Paesano, Antonio; Thompson, Robert B., Textured leading edge for aerospace and nautical structures.
  46. van Merkstoijn, Jacobus Lambertus, Turbulence foil.
  47. Fedorov Alexander V.,RUX ; Malmuth Norman D., Use of absorbing walls for laminar flow control.
  48. Bearman, Peter William; Owen, John; Szewczyk, Albin Anthony, Vortex shedding and drag force reduction.
  49. Fuglsang, Peter; Bove, Stefano, Wind turbine blade with submerged boundary layer control means comprising crossing sub-channels.
  50. Somers, Dan M., Wing airfoil.
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