EP1925779A1 - Flow guiding component and method of production therefore - Google Patents

Flow guiding component and method of production therefore Download PDF

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Publication number
EP1925779A1
EP1925779A1 EP06024324A EP06024324A EP1925779A1 EP 1925779 A1 EP1925779 A1 EP 1925779A1 EP 06024324 A EP06024324 A EP 06024324A EP 06024324 A EP06024324 A EP 06024324A EP 1925779 A1 EP1925779 A1 EP 1925779A1
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EP
European Patent Office
Prior art keywords
flow
surface structure
guiding component
sharkskin
sharkskin effect
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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Application number
EP06024324A
Other languages
German (de)
French (fr)
Inventor
Daniel Kulke
Mathias Schütz
Matthias Strauch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP06024324A priority Critical patent/EP1925779A1/en
Publication of EP1925779A1 publication Critical patent/EP1925779A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • 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
    • F01D5/005—Repairing methods or devices

Definitions

  • the invention relates to a method for producing a flow-guiding component, which has a flow-over or overflow area. However, the invention also relates to such a flow-guiding component itself.
  • Flow-conducting components may be, for example, turbomachines or pipes or pipelines.
  • Turbomachines can e.g. be designed as a gas turbine, steam turbine or the like.
  • a medium e.g., gas or vapor
  • Pipelines are mainly used to transport a medium from one place to another. Both in turbomachines and in pipelines it is observed that considerable frictional losses occur due to the friction of the respective medium on surfaces which are overflowed or overflowed so that the energy inherent or supplied to the medium is partially lost by friction losses or turbulences. As a result, the efficiency of the flow machines mentioned by way of example is considerably reduced, since the flow resistances are too high.
  • Overflowed areas are e.g. Inner walls of housings of turbomachinery, shaft surfaces or inner walls of pipelines.
  • the invention has for its object to provide a simple means improved process for the preparation of a flow-guiding component and a simple means improved flow-guiding component available, so that the flow resistance of the recirculated or overflowed surfaces further lowered and in particular the efficiency of Turbomachines is further increased.
  • the solution of this object succeeds according to the invention with a method and a flow-guiding component of the type mentioned in that the um- or overflow area is at least partially processed so that it has a sharkskin effect-generating surface structure.
  • the invention is based on the recognition that bionics, ie the combination of nature and technology, can make use of the functions of nature for high technologies.
  • the surface structure according to the invention with the advantageous sharkskin effect advantageously brings about a reduction in the flow resistance at the surfaces which are flown over or overflow, so that in particular the turbomachines have a higher efficiency.
  • the surfaces around or overflow are provided, at least in regions, with fine grooves running in the flow direction of the medium, which advantageously largely prevent, for example, turbulence.
  • the sharkskin effect generating surface structure may also be provided on the entire component, which is particularly favorable on the inner walls of pipelines.
  • the surface structure with the sharkskin effect can preferably be arranged on surfaces which are overflowed or overflowed and on which a correspondingly high flow velocity of the medium is present.
  • the sharkskin effect-producing surface structure In order to produce the sharkskin effect-producing surface structure, it is favorable for the purposes of the invention, when the sharkskin effect-producing surface structure of the machining over- or overflow area is removed in a preferred embodiment of the method.
  • the surface to be processed or overflowed surface is first provided with a layer of a suitable material, which is preferably removed by means of etching.
  • the layer should consist of a material adapted to the application, in particular the operating conditions of the flow-guiding component should be considered.
  • turbomachines are operated in the execution of a steam turbine as high-pressure, medium-pressure and / or low-pressure turbines in different temperature ranges.
  • the layer must therefore be able to withstand these relatively high temperatures, since the layer is not completely removed, but instead is provided correspondingly with fine grooves extending in the direction of flow in order to produce the sharkskin effect-producing surface structure.
  • the layer is of course connected with its side facing away from the medium sufficiently with the surface to be processed or flowed over.
  • the layer can be applied to the relevant surfaces or to the surfaces to be processed, wherein the etchant is passed through the corresponding component.
  • the etchant attacks the corresponding sites to be processed, thus creating the sharkskin effect-producing surface structure.
  • the etchant directly at the desired locations, without a separate layer is provided to produce the sharkskin effect-generating surface structure.
  • the relevant circumscribed or overflowed surface could then be manufactured according to material technology, so that the etchant can act accordingly here.
  • the layer or the material is designed or adjusted in such a way that these or , has these areas in which the etchant used removes a larger amount than in other areas.
  • elevations and depressions result in the layer on its side facing the medium, so that the fine grooves running in the direction of flow result.
  • the elevations and depressions or the fine grooves have an amount in the mycrometer range ( ⁇ m).
  • the layer in its unprocessed state also has only a thickness in the mycrometer range ( ⁇ m), so that a narrowing of the effective passage cross-section is negligible.
  • the sharkskin effect-producing surface structure is removed by mechanical means.
  • the surface around or overflowed could be processed by grinding technology.
  • the sharkskin effect-producing surface structure is applied to the surfaces overflowed or overflowed. It would be possible, e.g. an application of the sharkskin effect-producing surface structure on a film, which is sufficiently connected to the flow or overflow areas. Of course, care must be taken to a suitable operating conditions adapted to the type of connection or to a suitable connection means.
  • the use of the sharkskin effect-producing surface structure is particularly suitable in turbomachines and pipelines as flow-guiding components with correspondingly high flow rates.
  • the preferred removal (etching) produces fine grooves running in the direction of flow, so that transverse flows are reduced and edge losses are reduced.

Abstract

Production of a flow-guiding component comprises forming a surface having a surface structure in regions for producing a shark skin effect.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines strömungsführenden Bauteils, das eine um- bzw. überströmte Fläche aufweist. Die Erfindung betrifft aber auch ein solches strömungsführendes Bauteil selbst.The invention relates to a method for producing a flow-guiding component, which has a flow-over or overflow area. However, the invention also relates to such a flow-guiding component itself.

Strömungsführende Bauteile können beispielsweise Strömungsmaschinen oder Rohre bzw. Rohrleitungen sein. Strömungsmaschinen können z.B. als Gasturbine, Dampfturbine oder dergleichen ausgeführt sein. In den beispielhaften Strömungsmaschinen strömt ein Medium (z.B. Gas oder Dampf) entlang einem vorgegebenen Weg durch diese hindurch. Rohrleitungen dienen hauptsächlich zum Transport eines Mediums von einem Ort zu einem anderen. Sowohl bei Strömungsmaschinen als auch bei Rohrleitungen wird beobachtet, dass durch die Reibung des jeweiligen Mediums an um- bzw. überströmten Flächen erhebliche Reibungsverluste auftreten, so dass die dem Medium innewohnende bzw. zugeführte Energie durch Reibungsverluste bzw. Turbulenzen teilweise verloren geht. Dadurch wird der Wirkungsgrad der beispielhaft genannten Strömungsmaschinen erheblich reduziert, da die Strömungswiderstände zu hoch sind. Um- bzw. überströmte Flächen sind z.B. Innenwandungen von Gehäusen der Strömungsmaschinen, Wellenoberflächen oder Innenwandungen der Rohrleitungen.Flow-conducting components may be, for example, turbomachines or pipes or pipelines. Turbomachines can e.g. be designed as a gas turbine, steam turbine or the like. In the exemplary turbomachines, a medium (e.g., gas or vapor) flows along a predetermined path therethrough. Pipelines are mainly used to transport a medium from one place to another. Both in turbomachines and in pipelines it is observed that considerable frictional losses occur due to the friction of the respective medium on surfaces which are overflowed or overflowed so that the energy inherent or supplied to the medium is partially lost by friction losses or turbulences. As a result, the efficiency of the flow machines mentioned by way of example is considerably reduced, since the flow resistances are too high. Overflowed areas are e.g. Inner walls of housings of turbomachinery, shaft surfaces or inner walls of pipelines.

Im Stand der Technik ist es bekannt, strömungsführende Bauteile an ihren um- bzw. überströmten Flächen mit einer möglichst geringen Rauhigkeit herzustellen, um den Strömungswiderstand zu reduzieren. Nachteiliger Weise treten aber trotz der gewünschten geringen Rauhigkeit Querströmungen auf, die sich dennoch erhöhend auf den Strömungswiderstand und reduzierend auf den Wirkungsgrad auswirken.In the prior art, it is known to produce flow-guiding components on their surfaces which are overflowed or overflowed with the lowest possible roughness in order to reduce the flow resistance. Disadvantageous, however, occur despite the desired low roughness transverse flows, which nevertheless have an increasing effect on the flow resistance and reducing the efficiency.

Der Erfindung liegt die Aufgabe zugrunde, ein mit einfachen Mitteln verbessertes Verfahren zur Herstellung eines strömungsführenden Bauteils und ein mit einfachen Mitteln verbessertes strömungsführendes Bauteil zur Verfügung zu stellen, so dass der Strömungswiderstand an den um- bzw. überströmten Flächen weiter gesenkt und insbesondere der Wirkungsgrad von Strömungsmaschinen weiter erhöht wird.The invention has for its object to provide a simple means improved process for the preparation of a flow-guiding component and a simple means improved flow-guiding component available, so that the flow resistance of the recirculated or overflowed surfaces further lowered and in particular the efficiency of Turbomachines is further increased.

Die Lösung dieser Aufgabe gelingt erfindungsgemäß mit einem Verfahren und einem strömungsführenden Bauteil der Eingangs genannten Art dadurch, dass die um- bzw. überströmte Fläche zumindest bereichsweise bearbeitet ist, so dass diese eine Haifischhaut-Effekt erzeugende Oberflächenstruktur aufweist.The solution of this object succeeds according to the invention with a method and a flow-guiding component of the type mentioned in that the um- or overflow area is at least partially processed so that it has a sharkskin effect-generating surface structure.

Der Erfindung liegt die Erkenntnis zugrunde, dass sich die Bionik, also die Kombination von Natur und Technik, die Funktionsweisen der Natur für Hochtechnologien zunutze machen kann. Die erfindungsgemäße Oberflächenstruktur mit dem vorteilhaften Haifischhaut-Effekt bewirkt dabei vorteilhaft eine Senkung des Strömungswiderstandes an den um- bzw. überströmten Flächen, so dass insbesondere die Strömungsmaschinen einen höheren Wirkungsgrad aufweisen. Hierbei werden die um- bzw. überströmten Flächen zumindest bereichsweise mit in Strömungsrichtung des Mediums verlaufenden feinen Rillen versehen, welche vorteilhaft beispielsweise Turbulenzen weitgehend verhindern. Natürlich kann die Haifischhaut-Effekt erzeugende Oberflächenstruktur auch an dem gesamten Bauteil vorgesehen sein, was insbesondere an Innenwandungen von Rohrleitungen günstig ist. Weiter kann die Oberflächenstruktur mit dem Haifischhaut-Effekt bevorzugt an um- bzw. überströmten Flächen angeordnet sein, an denen eine entsprechend hohe Strömungsgeschwindigkeit des Mediums ansteht.The invention is based on the recognition that bionics, ie the combination of nature and technology, can make use of the functions of nature for high technologies. The surface structure according to the invention with the advantageous sharkskin effect advantageously brings about a reduction in the flow resistance at the surfaces which are flown over or overflow, so that in particular the turbomachines have a higher efficiency. In this case, the surfaces around or overflow are provided, at least in regions, with fine grooves running in the flow direction of the medium, which advantageously largely prevent, for example, turbulence. Of course, the sharkskin effect generating surface structure may also be provided on the entire component, which is particularly favorable on the inner walls of pipelines. Furthermore, the surface structure with the sharkskin effect can preferably be arranged on surfaces which are overflowed or overflowed and on which a correspondingly high flow velocity of the medium is present.

Um die Haifischhaut-Effekt erzeugende Oberflächenstruktur herzustellen, ist es günstig im Sinne der Erfindung, wenn die Haifischhaut-Effekt erzeugende Oberflächenstruktur von der zu bearbeitenden um- bzw. überströmten Fläche in bevorzugter Ausführung des Verfahrens abgetragen wird.In order to produce the sharkskin effect-producing surface structure, it is favorable for the purposes of the invention, when the sharkskin effect-producing surface structure of the machining over- or overflow area is removed in a preferred embodiment of the method.

Zweckmäßiger Weise wird die zu bearbeitende um- bzw. überströmte Fläche dabei zunächst mit einer Schicht aus einem geeigneten Material versehen, die bevorzugt mit ätzenden Mitteln abgetragen wird. Die Schicht sollte dabei aus einem dem Anwendungsfall angepassten Material bestehen, wobei insbesondere die Betriebsbedingungen des strömungsführenden Bauteils beachtet werden sollten. Beispielsweise Strömungsmaschinen werden in der Ausführung als Dampfturbine als Hochdruck-, Mitteldruck- und/oder Niederdruckturbinen in jeweils unterschiedlichen Temperaturbereichen betrieben. Die Schicht muss also diesen relativ hohen Temperaturen widerstehen können, da die Schicht nicht komplett abgetragen wird, sondern zur Erzeugung der Haifischhaut-Effekt erzeugenden Oberflächenstruktur entsprechend mit in Strömungsrichtung verlaufenden feinen Rillen versehen ist. Die Schicht ist hierbei natürlich mit ihrer Medium abgewandten Seite hinreichend mit der zu bearbeitenden um- bzw. überströmten Fläche verbunden. Die Schicht kann dabei auf den relevanten Flächen bzw. den zu bearbeitenden Flächen aufgebracht sein, wobei das Ätzmittel durch das entsprechende Bauteil geleitet wird. Das Ätzmittel greift die entsprechenden zu bearbeitenden Stellen an und erzeugt so die Haifischhaut-Effekt erzeugende Oberflächenstruktur. Möglich ist aber auch, dass das Ätzmittel direkt an den gewünschten Stellen, ohne dass eine separate Schicht vorgesehen ist, die Haifischhaut-Effekt erzeugenden Oberflächenstruktur erzeugt. Hierbei könnte dann die relevante um- bzw. überströmte Fläche entsprechend Werkstofftechnisch hergestellt sein, so dass das Ätzmittel hier entsprechend wirken kann.Appropriately, the surface to be processed or overflowed surface is first provided with a layer of a suitable material, which is preferably removed by means of etching. The layer should consist of a material adapted to the application, in particular the operating conditions of the flow-guiding component should be considered. For example, turbomachines are operated in the execution of a steam turbine as high-pressure, medium-pressure and / or low-pressure turbines in different temperature ranges. The layer must therefore be able to withstand these relatively high temperatures, since the layer is not completely removed, but instead is provided correspondingly with fine grooves extending in the direction of flow in order to produce the sharkskin effect-producing surface structure. The layer is of course connected with its side facing away from the medium sufficiently with the surface to be processed or flowed over. The layer can be applied to the relevant surfaces or to the surfaces to be processed, wherein the etchant is passed through the corresponding component. The etchant attacks the corresponding sites to be processed, thus creating the sharkskin effect-producing surface structure. But it is also possible that the etchant directly at the desired locations, without a separate layer is provided to produce the sharkskin effect-generating surface structure. In this case, the relevant circumscribed or overflowed surface could then be manufactured according to material technology, so that the etchant can act accordingly here.

Um die Haifischhaut-Effekt erzeugende Oberflächenstruktur, bzw. die in Strömungsrichtung verlaufenden feinen Rillen aus der Schicht bzw. dem Werkstoff abzutragen, ist es günstig im Sinne der Erfindung, wenn die Schicht bzw. der Werkstoff derart ausgeführt bzw. eingestellt ist, dass diese bzw. dieser Bereiche aufweist, in denen das verwendete Ätzmittel einen größeren Betrag abträgt als in anderen Bereichen. Hierdurch ergeben sich in der Schicht auf ihrer dem Medium zugewandten Seite Erhebungen und Vertiefungen, so dass sich die in Strömungsrichtung verlaufenden feinen Rillen ergeben. Die Erhebungen und Vertiefungen bzw. die feinen Rillen weisen einen Betrag im Mycrometerbereich (µm) auf. Selbstverständlich weist die Schicht in Ihrem unbearbeiteten Zustand auch nur einen Dickenbetrag im Mycrometerbereich (µm) auf, so dass eine Verengung des effektiven Durchgangsquerschnittes vernachlässigbar ist.In order to remove the sharkskin-effect-producing surface structure, or the fine grooves running in the direction of flow, from the layer or the material, it is favorable for the purposes of the invention if the layer or the material is designed or adjusted in such a way that these or , has these areas in which the etchant used removes a larger amount than in other areas. As a result, elevations and depressions result in the layer on its side facing the medium, so that the fine grooves running in the direction of flow result. The elevations and depressions or the fine grooves have an amount in the mycrometer range (μm). Of course, the layer in its unprocessed state also has only a thickness in the mycrometer range (μm), so that a narrowing of the effective passage cross-section is negligible.

Möglich ist selbstverständlich auch, dass die Haifischhaut-Effekt erzeugende Oberflächenstruktur mit mechanischen Mitteln abgetragen wird. Beispielsweise könnte die um- bzw. überströmte Fläche schleiftechnisch bearbeitet werden. Denkbar ist aber auch, dass die Haifischhaut-Effekt erzeugende Oberflächenstruktur auf die um- bzw. überströmten Flächen aufgetragen wird. Möglich wäre z.B. ein Auftragen der Haifischhaut-Effekt erzeugende Oberflächenstruktur auf eine Folie, die mit den um- bzw. überströmten Flächen hinreichend verbunden wird. Natürlich muss dabei auf eine den entsprechenden Betriebsbedingungen angepasste Verbindungsart bzw. auf ein geeignetes Verbindungsmittel geachtet werden.It is of course also possible that the sharkskin effect-producing surface structure is removed by mechanical means. For example, the surface around or overflowed could be processed by grinding technology. It is also conceivable that the sharkskin effect-producing surface structure is applied to the surfaces overflowed or overflowed. It would be possible, e.g. an application of the sharkskin effect-producing surface structure on a film, which is sufficiently connected to the flow or overflow areas. Of course, care must be taken to a suitable operating conditions adapted to the type of connection or to a suitable connection means.

Die Verwendung der Haifischhaut-Effekt erzeugenden Oberflächenstruktur eignet sich insbesondere in Strömungsmaschinen und Rohrleitungen als strömungsführende Bauteile mit entsprechend hohen Strömungsgeschwindigkeiten. Durch das bevorzugte Abtragen (Ätzen) werden in Strömungsrichtung verlaufende feine Rillen erzeugt, so dass Querströmungen herabgesetzt und Randverluste verringert sind.The use of the sharkskin effect-producing surface structure is particularly suitable in turbomachines and pipelines as flow-guiding components with correspondingly high flow rates. The preferred removal (etching) produces fine grooves running in the direction of flow, so that transverse flows are reduced and edge losses are reduced.

Claims (11)

Verfahren zur Herstellung eines strömungsführenden Bauteils, das eine um- bzw. überströmte Fläche aufweist
dadurch gekennzeichnet, dass
die Fläche zumindest bereichsweise derart bearbeitet ist, dass diese eine Haifischhaut-Effekt erzeugende Oberflächenstruktur aufweist.Method for producing a flow-guiding component, which has a flow-over or overflow area
characterized in that
the surface is at least partially processed so that it has a sharkskin effect-generating surface structure. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Haifischhaut-Effekt erzeugende Oberflächenstruktur von der Fläche abgetragen wird.Method according to claim 1,
characterized in that the sharkskin effect-generating surface structure is removed from the surface. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Fläche zunächst mit einer Schicht versehen wird, die mittels ätzender Mittel abgetragen wird, so dass die Haifischhaut-Effekt erzeugende Oberflächenstruktur erzeugt wird.Method according to claim 1 or 2,
characterized in that the surface is first provided with a layer which is removed by means of etching, so that the sharkskin effect-generating surface structure is generated. Verfahren nach Anspruch 3,
dadurch gekennzeichnet, dass die Schicht derart ausgeführt ist, dass zum einen Bereiche mit einem größeren Betrag und zum anderen Bereiche mit einem geringerem Betrag abgetragen werden.Method according to claim 3,
characterized in that the layer is designed such that on the one hand regions with a larger amount and on the other hand areas with a smaller amount are removed. Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Haifischhaut-Effekt erzeugende Oberflächenstruktur mit mechanischen Mitteln abgetragen wird.Method according to one of the preceding claims,
characterized in that
the sharkskin effect generating surface structure is removed by mechanical means. Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Haifischhaut-Effekt erzeugende Oberflächenstruktur auf der Fläche aufgetragen wird.Method according to one of the preceding claims,
characterized in that
the sharkskin effect generating surface structure is applied to the surface. Strömungsführendes Bauteil, das eine um- bzw. überströmte Fläche aufweist, wobei das strömungsführende Bauteil insbesondere nach einem Verfahren nach einem der vorhergehenden Ansprüche hergestellt ist,
dadurch gekennzeichnet, dass die Fläche zumindest bereichsweise eine Haifischhaut-Effekt erzeugende Oberflächenstruktur aufweist.Flow-conducting component, which has a flow-over or overflow area, wherein the flow-guiding component is produced in particular by a method according to one of the preceding claims,
characterized in that the surface has at least partially a sharkskin effect-generating surface structure. Strömungsführendes Bauteil nach Anspruch 7,
dadurch gekennzeichnet, dass
die Haifischhaut-Effekt erzeugende Oberflächenstruktur in einer Strömungsmaschine angeordnet ist.Flow guiding component according to claim 7,
characterized in that
the sharkskin effect-generating surface structure is arranged in a turbomachine. Strömungsführendes Bauteil nach Anspruch 7 oder 8,
dadurch gekennzeichnet, dass die Haifischhaut-Effekt erzeugende Oberflächenstruktur in einem Rohr bzw. einer Rohrleitung angeordnet ist.Flow-conducting component according to claim 7 or 8,
characterized in that the sharkskin effect-generating surface structure is arranged in a pipe or a pipeline. Strömungsführendes Bauteil nach einem der Ansprüche 7 bis 9,
dadurch gekennzeichnet, dass die Haifischhaut-Effekt erzeugende Oberflächenstruktur in einer geätzten Schicht angeordnet ist.Flow guiding component according to one of claims 7 to 9,
characterized in that the sharkskin effect-generating surface structure is disposed in an etched layer. Verwendung einer Haifischhaut-Effekt erzeugenden Oberflächenstruktur an um- bzw. überströmten Flächen insbesondere in einem strömungsführenden Bauteil nach einem der vorhergehenden Ansprüche.Use of a sharkskin effect-producing surface structure on flow or overflow areas, in particular in a flow-guiding component according to one of the preceding claims.
EP06024324A 2006-11-23 2006-11-23 Flow guiding component and method of production therefore Withdrawn EP1925779A1 (en)

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Cited By (4)

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DE102010007570A1 (en) 2010-02-10 2011-08-11 ThyssenKrupp Nirosta GmbH, 47807 Product for fluidic applications, process for its preparation and use of such a product
DE102012100933A1 (en) 2011-02-04 2012-08-09 Schott Ag Detention system for connection of two subject matters, has adhesive layer comprising bionic structure that is present in form of spatulas and producible over embossing method, where adhesive layer is applied on substrate
US9268215B2 (en) 2009-10-02 2016-02-23 Danmarks Tekniske Universitet Injection molding tools with micro/nano-meter pattern
DE102017219642A1 (en) * 2017-11-06 2019-05-09 Siemens Aktiengesellschaft Layer system and shovel

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