JP5631538B2 - 境界層を乱す隆起要素の形成方法 - Google Patents
境界層を乱す隆起要素の形成方法 Download PDFInfo
- Publication number
- JP5631538B2 JP5631538B2 JP2008243727A JP2008243727A JP5631538B2 JP 5631538 B2 JP5631538 B2 JP 5631538B2 JP 2008243727 A JP2008243727 A JP 2008243727A JP 2008243727 A JP2008243727 A JP 2008243727A JP 5631538 B2 JP5631538 B2 JP 5631538B2
- Authority
- JP
- Japan
- Prior art keywords
- peak
- impact
- laser
- blade
- height
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/78—Making other particular articles propeller blades; turbine blades
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/356—Working by laser beam, e.g. welding, cutting or boring for surface treatment by shock processing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/3568—Modifying rugosity
- B23K26/3584—Increasing rugosity, e.g. roughening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/001—Turbines
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49336—Blade making
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Laser Beam Processing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
流れを受ける部品の表面上の所望の区域において、流れを乱す隆起要素を生成することにより、層流境界層と乱流境界層との間に遷移領域(II)を設けること、
適切な区域に乱流を引き起こす隆起要素を配置することにより、この領域(II)の位置を可能な限り制御すること、
以下の選択により、この遷移領域における乱流強度を可能な限り制御すること:
レーザ衝撃(矩形状又はその他の形状のインパクト)に耐える表面の形状の選択、
前縁又は後縁に平行なピーク高さの選択、
ピーク線間の距離の選択。
A 停止ポイント
CL 境界層
d 距離
I0、I’1、I’2、I’’1、I’’2、I’’3、In インパクト
PR 外形
R1、R2、R3、R4、R’1、R’2、R’’1、R’’2、R’’3 隆起要素
Rl 長手方向ピーク線
Rt 横方向ピーク線
V 速度
W エネルギの変動
Claims (10)
- 流体が流れることが可能な壁の表面上に境界層の乱れを起こす隆起要素を生成する方法であって、
壁の表面上における層流境界層と乱流境界層との間の遷移領域の位置を制御するため、乱流を引き起こす隆起要素を配置するのに適切な領域を判定することと、
前記乱れ隆起要素を構成するピークをレーザ衝撃のインパクト区域の境界に作り出すように、前記表面の前記適切な領域にレーザ衝撃を印加することであって、レーザ衝撃の方法が、
前記表面をアブレーションコーティングで被覆することと、
被覆材料を蒸発させおよび衝撃波を発生させることにより被覆材料のアブレーションを生じさせるため、前記表面に向けて高エネルギのパルスレーザビームを照射することと
を含むことと、
前記インパクトの形状、ピークの高さおよびレーザ衝撃間の距離のうち少なくとも1つの選択により、前記遷移領域における乱流強度を制御することと
を含む、方法。 - 前記インパクトが、正方形状、矩形状、円形状または楕円形状を有する、請求項1に記載の方法。
- 前記ピークの高さを、複数のレーザ衝撃のうち幾つかを互いに重複するように印加することで変化させる、請求項2に記載の方法であって、レーザ衝撃の重複が、インパクト区域の境界に押しつぶされたピークを生じさせ、押しつぶされたピークの高さが、レーザ衝撃の重複に応じ、重複の量が少ないほど減少する、方法。
- 前記押しつぶされたピークを、僅かな粗さおよび層流が求められる領域に形成する、請求項3に記載の方法。
- 印加されるエネルギを、異なる高さの乱れ隆起要素が得られるように、インパクト区域に応じて変化させる、請求項1に記載の方法。
- ターボ機械ブレードの壁に適用される、請求項1に記載の方法。
- 前記レーザ衝撃のインパクト区域が、矩形状をなして、ブレードの翼弦に沿って並べられるとともに、ブレードの軸に対して平行に並べられ、複数のインパクトが、ブレードの軸に平行な長手方向ピーク線と、ブレードの翼弦に平行な横方向ピーク線とを呈する、請求項6に記載の方法。
- 横方向ピーク線のピークの高さが、長手方向ピーク線のピークの高さよりも低い、請求項7に記載の方法。
- レーザ衝撃を、ブレードの吸引面に印加する、請求項8に記載の方法。
- ガスタービンエンジンのコンプレッサブレードの壁に適用される、請求項7に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0706675A FR2921448A1 (fr) | 2007-09-24 | 2007-09-24 | Procede de formation de reliefs pertubateurs de couche limite |
FR0706675 | 2007-09-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009072830A JP2009072830A (ja) | 2009-04-09 |
JP5631538B2 true JP5631538B2 (ja) | 2014-11-26 |
Family
ID=39361430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008243727A Active JP5631538B2 (ja) | 2007-09-24 | 2008-09-24 | 境界層を乱す隆起要素の形成方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US8256116B2 (ja) |
EP (1) | EP2039946B1 (ja) |
JP (1) | JP5631538B2 (ja) |
CA (1) | CA2639724C (ja) |
DE (1) | DE602008001290D1 (ja) |
FR (1) | FR2921448A1 (ja) |
RU (1) | RU2471995C2 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7850126B2 (en) * | 2007-04-25 | 2010-12-14 | The Boeing Company | Laminar flow surfaces with selected roughness distributions, and associated methods |
US20100330340A1 (en) * | 2009-05-12 | 2010-12-30 | University Of Massachusetts | Superhydrophobic surfaces for drag reduction |
GB2476801A (en) * | 2010-01-08 | 2011-07-13 | Stephen Martin Redcliffe | Surface features for increasing the efficiency of wind turbine Flettner rotors. |
KR101906613B1 (ko) * | 2010-07-27 | 2018-10-10 | 더 리전트 오브 더 유니버시티 오브 캘리포니아 | 액체에서 초소수성을 회복하고 유지하기 위한 방법 및 장치 |
US20130052479A1 (en) * | 2011-08-30 | 2013-02-28 | Venkatarama K. Seetharaman | Laser shock peening of airfoils |
WO2016108842A1 (en) | 2014-12-30 | 2016-07-07 | Halliburton Energy Services, Inc. | Downhole tool surfaces configured to reduce drag forces and erosion during exposure to fluid flow |
CN105002349B (zh) * | 2015-07-21 | 2017-05-03 | 江苏大学 | 一种变光斑多层交错激光冲击均匀强化叶片的方法 |
GB2551241B (en) * | 2016-03-31 | 2019-04-17 | Porsche Ag | Method for machining a surface of a metal component |
DE102017201648A1 (de) * | 2016-03-31 | 2017-10-05 | Dr. Ing. H.C. F. Porsche Ag | Verfahren zum Bearbeiten einer Oberfläche eines metallischen Bauteils und metallisches Bauteil |
CN116552777B (zh) * | 2023-07-05 | 2023-09-12 | 中国空气动力研究与发展中心计算空气动力研究所 | 一种涡流调控器以及一种飞行器 |
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US5133516A (en) * | 1985-05-31 | 1992-07-28 | Minnesota Mining And Manufacturing Co. | Drag reduction article |
DE3534293A1 (de) * | 1985-09-26 | 1987-04-02 | Messerschmitt Boelkow Blohm | Einrichtung zur verringerung des reibungswiderstandes |
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GB2226970B (en) * | 1989-01-11 | 1992-10-21 | British Aerospace | Methods of manufacture and surface treatment using laser radiation |
RU2001833C1 (ru) * | 1990-05-23 | 1993-10-30 | Vinokurov Viktor P | Несуща поверхность Винокурова |
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-
2007
- 2007-09-24 FR FR0706675A patent/FR2921448A1/fr not_active Withdrawn
-
2008
- 2008-09-19 DE DE602008001290T patent/DE602008001290D1/de active Active
- 2008-09-19 EP EP08164750A patent/EP2039946B1/fr active Active
- 2008-09-23 RU RU2008138053/06A patent/RU2471995C2/ru active
- 2008-09-23 CA CA2639724A patent/CA2639724C/fr active Active
- 2008-09-24 JP JP2008243727A patent/JP5631538B2/ja active Active
- 2008-09-24 US US12/236,839 patent/US8256116B2/en active Active
-
2012
- 2012-08-09 US US13/570,475 patent/US8607456B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
US8607456B1 (en) | 2013-12-17 |
CA2639724A1 (fr) | 2009-03-24 |
US8256116B2 (en) | 2012-09-04 |
US20090083979A1 (en) | 2009-04-02 |
EP2039946B1 (fr) | 2010-05-19 |
JP2009072830A (ja) | 2009-04-09 |
US20130333213A1 (en) | 2013-12-19 |
EP2039946A1 (fr) | 2009-03-25 |
CA2639724C (fr) | 2015-12-08 |
DE602008001290D1 (de) | 2010-07-01 |
RU2471995C2 (ru) | 2013-01-10 |
FR2921448A1 (fr) | 2009-03-27 |
RU2008138053A (ru) | 2010-03-27 |
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