Bis zu 50 % günstiger als neu 3 Jahre rebuy Garantie Professionelles Refurbishment

Flow and heat transfer phenomena in a complex impingement system for integrally cooled turbine blades

Derzeit nicht verfügbar

Handgeprüfte Gebrauchtware

Bis zu 50 % günstiger als neu

Der Umwelt zuliebe

Flow and heat transfer phenomena in a complex impingement system for integrally cooled turbine blades

Sebastian Schulz (Taschenbuch, Englisch)

Keine Bewertungen vorhanden

Optischer Zustand

Beschreibung

A novel jet impingement cooling concept was the focus of the present work. It was drafted to be integrated into the mid-chord section of a highly loaded turbine blade. The concept features a staggered jet and vent holes system through which the conditions inside the cooling cavity are established. In order to provide a fundamental understanding of the aerothermal characteristics for such an integral concept, the present work details the findings from a series of experimental investigations. A baseline geometry setup served to gain principal insight into the concept’s flow and heat transfer properties. Continued investigations considered multiple geometry variants, studying the effects of, e.g., the alignment between the jet and vent holes, the extraction of cavity fluid through film holes, and the modification of heat transfer surfaces through dimples. For the experimental investigations a test rig which incorporated the cooling passage model was used. The primary measurement techniques involved particle image velocimetry (PIV) and transient as well as steady-state liquid crystal thermography (TLC). Through these methods, spatially resolved flow field, heat transfer, and adiabatic surface temperature distributions were obtained. Additionally, steady-state and time-resolved pressure measurements were performed. Furthermore, a proper orthogonal decomposition analysis of the PIV data was undertaken to unveil hidden flow structures. The baseline results reveal unique heat transfer characteristics for the passage walls, spanning a broad spectrum of heat transfer rates, which are exclusive to the complex flow field within the cooling passage. Relentlessly impinging jets induce high heat transfer rates on the respective target walls, forming local patterns unique to oblique impingement scenarios. Contrarily, flow regions in which fluid mixing is scarce effect areas of low heat transfer in the overall distributions. A sovereign feature of the passage’s flow field is denoted by the formation of a dominant center vortex. The present study successfully demonstrates that the basic heat transfer characteristics can be adjusted towards a more thermally balanced heat transfer situation despite the stringent geometric confinement. Hence, the extraction of cavity fluid through adequately placed film holes delineates an effective measure. This produces a remarkable increase in the local heat transfer for a region generally governed by low heat transfer rates. Weniger zeigen

Dieses Produkt haben wir gerade leider nicht auf Lager.

ab 41,99 €

Derzeit nicht verfügbar

Handgeprüfte Gebrauchtware

Bis zu 50 % günstiger als neu

Der Umwelt zuliebe

Produktinformationen

Technische Daten

Erscheinungsdatum

15.03.2018

Sprache

Englisch

EAN

9783843934985

Herausgeber

Dr. Hut

Serien- oder Bandtitel

Thermodynamik

Sonderedition

Nein

Autor

Sebastian Schulz

Seitenanzahl

281

Einbandart

Taschenbuch

Schlagwörter

Turbine Blade Cooling, Jet Impingement, Heat Transfer

Thema-Inhalt

P - Mathematik und Naturwissenschaften PH - Physik PHH - Thermodynamik und Wärme

Höhe

210 mm

Breite

14.8 cm

Warnhinweise und Sicherheitsinformationen

Informationen nach EU Data Act

Bewertungen

-.-

Leider noch keine Bewertungen

Sicher bei rebuy kaufen

Schreib die erste Bewertung für dieses Produkt!

Wenn du eine Bewertung für dieses Produkt schreibst, hilfst du allen Kund:innen, die noch überlegen, ob sie das Produkt kaufen wollen. Vielen Dank, dass du mitmachst!