JP2008163940A - 翼形部前縁端部壁渦流低減プラズマ - Google Patents
翼形部前縁端部壁渦流低減プラズマ Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/145—Means for influencing boundary layers or secondary circulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/142—Shape, i.e. outer, aerodynamic form of the blades of successive rotor or stator blade-rows
- F01D5/143—Contour of the outer or inner working fluid flow path wall, i.e. shroud or hub contour
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/186—Film cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/121—Fluid guiding means, e.g. vanes related to the leading edge of a stator vane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/202—Heat transfer, e.g. cooling by film cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/17—Purpose of the control system to control boundary layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/17—Purpose of the control system to control boundary layer
- F05D2270/172—Purpose of the control system to control boundary layer by a plasma generator, e.g. control of ignition
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- 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
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/914—Device to control boundary layer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Plasma Technology (AREA)
Abstract
【解決手段】前縁渦流低減システムは、端部壁88から離れる方向に翼長方向に延びるガスタービンエンジン翼形部39と、翼形部の前縁LEの近く、かつ前縁の周りに位置すると共に、フィレット34の近くに位置する前縁領域89内に翼形部及び端部壁間のフィレットを通って翼長方向に延びる1つ以上のプラズマ発生器とを含む。プラズマ発生器は、前縁領域内においてフィレットの一部分上に延びるプラズマを生成するように作動可能である。プラズマ発生器は、その第1の部分が翼形部の正圧側面上に位置し、かつ第2の部分が翼形部の負圧側面上に位置した状態で、翼形部の外壁上に取付けることができる。本システムを作動させる方法は、1以上のプラズマ発生器に電力供給して、定常状態又は非定常モードでプラズマを形成する段階を含む。
【選択図】図8
Description
3 内側電極
4 外側電極
5 誘電体材料
6 溝
8 エンジン中心軸線
10 ガスタービンエンジン
11 前縁渦流低減システム
12 ファン
14 周囲空気
16 ブースタ又は低圧圧縮機(LPC)
18 高圧圧縮機(HPC)
19 ガス流
20 燃焼器
22 高圧タービン(HPT)
24 低圧タービン(LPT)
26 外壁
28 低圧シャフト
29 高圧ロータ
30 タービンノズル
31 ベーン組立体
32 ベーン
33 列
34 フィレット
35 冷却空気
38 内側バンド
39 翼形部
40 外側バンド
41 中空内部
42 セグメント
43 高圧圧縮機段
44 ライナ開口
45 圧縮機吐出空気
46 正圧側面
47 下流フランジ
48 負圧側面
49 フィルム冷却開口
50 流路
51 電子制御装置
52 内側高温表面
54 外側高温表面
56 冷却空気プレナム
72 環状シュラウド
74 内側燃焼器ライナ
76 外側燃焼器ライナ
80 タービンブレード
82 翼形部先端
84 翼形部根元
86 ブレードプラットフォーム
88 端部壁
89 前縁領域
90 プラズマ
92 プラズマ誘導体
94 バーチャル前縁
96 馬蹄形渦流
100 AC電源
102 端縁部
104 区域
D 下流方向
C 翼弦方向
S 翼長方向
LE 前縁
TE 後縁
Claims (10)
- 端部壁(88)から離れる方向に翼長方向(S)に延びるガスタービンエンジン翼形部(39)と、
前記翼形部(39)及び端部壁(88)間のフィレット(34)と、
前記翼形部(39)の前縁(LE)の近くかつ該前縁(LE)の周りの前記フィレット(34)の前縁領域(89)と、
前記前縁領域(89)内において前記フィレット(34)を通って翼長方向(S)に延びる1つ又はそれ以上のプラズマ発生器(2)と、を含み、
前記プラズマ発生器(2)が、前記前縁領域(89)内において前記フィレット(34)の少なくとも一部分上に延びるプラズマ(90)を生成するように作動可能である、
ことを特徴とする前縁渦流低減システム(11)。 - 前記プラズマ発生器(2)が、前記翼形部(39)の外壁(26)上に取付けられることをさらに特徴とする、請求項1記載のシステム(11)。
- 前記ガスタービンエンジン翼形部(39)が、該翼形部(39)の前縁(LE)及び後縁(TE)間で翼弦方向(C)に延び、
前記プラズマ発生器(2)のうちの第1の部分が、前記翼形部(39)の正圧側面(46)上に配置され、
前記プラズマ発生器(2)のうちの第2の部分が、前記翼形部(39)の負圧側面(48)上に配置される、
ことをさらに特徴とする、請求項2記載のシステム(11)。 - 前記プラズマ発生器(2)が、誘電体材料(5)によって分離された内側及び外側電極(3、4)を含むことをさらに特徴とする、請求項1記載のシステム(11)。
- 前記電極に接続されて該電極に高電圧AC電位を供給するAC電源(100)を含むことをさらに特徴とする、請求項4記載のシステム(11)。
- 前記誘電体材料(5)が、前記翼形部(39)の外壁(26)の外側高温表面(54)の溝(6)内に配置されることをさらに特徴とする、請求項4記載のシステム(11)。
- 前記ガスタービンエンジン翼形部(39)が、該翼形部(39)の前縁(LE)及び後縁(TE)間で翼弦方向(C)に延び、
前記プラズマ発生器(2)のうちの第1の部分が、前記翼形部(39)の正圧側面(46)に配置され、
前記プラズマ発生器(2)のうちの第2の部分が、前記翼形部(39)の負圧側面(48)上に配置され、
前記翼形部(39)が、高圧タービンノズルベーンに含まれかつそれぞれ半径方向内側及び外側バンド(38、40)間で半径方向翼長方向(S)に延び、
前記端部壁(88)が、前記バンドの1つである、
ことをさらに特徴とする、請求項6記載のシステム(11)。 - 円周方向に間隔を置いて配置されかつ半径方向に延びるガスタービンエンジンベーン(32)の列(33)を備えたベーン組立体(31)を含み、
前記ベーン(32)の各々が、半径方向内側及び外側バンド(38、40)間で半径方向翼長方向(S)に延びる翼形部(39)を有し、
前記翼形部(39)が、対向する前縁及び後縁(LE、TE)間で翼弦方向(C)に延びる外壁(26)を有し、
フィレット(34)が、前記翼形部(39)と前記内側及び外側バンド(38、40)との間に設けられ、
前記フィレット(34)の前縁領域(89)が、前記翼形部(39)の前縁(LE)の近くかつ該前縁(LE)の周りに位置し、
1つ又はそれ以上のプラズマ発生器(2)が、前記前縁領域(89)内において前記フィレット(34)を通って翼長方向(S)に延びる、
ことを特徴とする前縁渦流低減システム(11)。 - 前縁渦流低減システム(11)を作動させる方法であって、
1つ又はそれ以上のプラズマ発生器(2)に電力供給して、ガスタービンエンジン翼形部(39)の前縁領域(89)内においてフィレット(34)の少なくとも一部分上に延びるプラズマ(90)を形成する段階、
を含み、ここで、
前記翼形部(39)が、端部壁(88)から離れる方向に翼長方向(S)に延び、
前記フィレット(34)が、前記翼形部(39)及び端部壁(88)間に位置し、
前記前縁領域(89)が、前記翼形部(39)の前縁(LE)の近くかつ該前縁(LE)の周りに位置すると共に前記フィレット(34)の近くに位置する、ようになっている、
ことを特徴とする方法。 - 前記電力供給する段階が、誘電体材料(5)によって分離された前記プラズマ発生器(2)の内側及び外側電極(3、4)にAC電位を供給する段階と、前記プラズマ発生器(2)を定常状態又は非定常モードで作動させる段階とを含むことをさらに特徴とする、請求項9記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/639,876 US7628585B2 (en) | 2006-12-15 | 2006-12-15 | Airfoil leading edge end wall vortex reducing plasma |
US11/639,876 | 2006-12-15 |
Publications (2)
Publication Number | Publication Date |
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JP2008163940A true JP2008163940A (ja) | 2008-07-17 |
JP4906699B2 JP4906699B2 (ja) | 2012-03-28 |
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Application Number | Title | Priority Date | Filing Date |
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JP2007321505A Expired - Fee Related JP4906699B2 (ja) | 2006-12-15 | 2007-12-13 | 翼形部前縁端部壁渦流低減プラズマ |
Country Status (5)
Country | Link |
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US (1) | US7628585B2 (ja) |
EP (1) | EP1936117A3 (ja) |
JP (1) | JP4906699B2 (ja) |
CA (1) | CA2612810C (ja) |
RU (1) | RU2471996C2 (ja) |
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Also Published As
Publication number | Publication date |
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JP4906699B2 (ja) | 2012-03-28 |
RU2471996C2 (ru) | 2013-01-10 |
CA2612810C (en) | 2015-01-06 |
RU2007146767A (ru) | 2009-06-20 |
EP1936117A3 (en) | 2009-05-13 |
EP1936117A2 (en) | 2008-06-25 |
US20080145210A1 (en) | 2008-06-19 |
CA2612810A1 (en) | 2008-06-15 |
US7628585B2 (en) | 2009-12-08 |
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