Kegalj, Martin ; Schiffer, Heinz-Peter (2008)
Endoscopic PIV Measurements in a Low Pressure Turbine Rig.
14th International Symposium on Applications of Laser Techniques to Fluid Mechanics. Lisbon, Portugal (07-10 July 2008)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
The Particle-Image-Velocimetry (PIV) has become a useful approach to acquire information on the flow in turbomachinery. Several premises have to be fulfilled to achieve high-quality data, e.g. optical access, low vibrations, low reflections and so on. But not every test facility complies with these requirements, a suitable casing is very important for the use of PIV. If there is no optical access to the test area, measurements cannot be performed. The use of borescopic optics is a possible approach to this issue, since the access can be very small (in this case ø = 8 mm). To reduce reflections in the measurement area fluorescent paint can be used. To acquire velocity information in the 3 components of space, several test setups like Stereo-PIV, Dual- Plane PIV, Holographic PIV and Tomographic PIV can be chosen. But these techniques require either large optical accesses from different viewing angles or very complex test setups. Different light sheet orientations in combination with borescopic optics using the Planar PIV can deliver sufficient information of the flow. This study will show the feasibility of such an approach in an enclosed test area like the interblade space in a Low-Pressure-Turbine-Rig. The results from PIV will be compared with data collected with conventional techniques like the Five-Hole-Probe and the 2-component Hot-Wire-Anemometry. An analysis of time- and phase-averaged data will be performed.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Kegalj, Martin ; Schiffer, Heinz-Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Endoscopic PIV Measurements in a Low Pressure Turbine Rig |
| Sprache: | Englisch |
| Publikationsjahr: | Juli 2008 |
| Veranstaltungstitel: | 14th International Symposium on Applications of Laser Techniques to Fluid Mechanics |
| Veranstaltungsort: | Lisbon, Portugal |
| Veranstaltungsdatum: | 07-10 July 2008 |
| Kurzbeschreibung (Abstract): | The Particle-Image-Velocimetry (PIV) has become a useful approach to acquire information on the flow in turbomachinery. Several premises have to be fulfilled to achieve high-quality data, e.g. optical access, low vibrations, low reflections and so on. But not every test facility complies with these requirements, a suitable casing is very important for the use of PIV. If there is no optical access to the test area, measurements cannot be performed. The use of borescopic optics is a possible approach to this issue, since the access can be very small (in this case ø = 8 mm). To reduce reflections in the measurement area fluorescent paint can be used. To acquire velocity information in the 3 components of space, several test setups like Stereo-PIV, Dual- Plane PIV, Holographic PIV and Tomographic PIV can be chosen. But these techniques require either large optical accesses from different viewing angles or very complex test setups. Different light sheet orientations in combination with borescopic optics using the Planar PIV can deliver sufficient information of the flow. This study will show the feasibility of such an approach in an enclosed test area like the interblade space in a Low-Pressure-Turbine-Rig. The results from PIV will be compared with data collected with conventional techniques like the Five-Hole-Probe and the 2-component Hot-Wire-Anemometry. An analysis of time- and phase-averaged data will be performed. |
| Freie Schlagworte: | PIV |
| ID-Nummer: | Paper #1233 |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Gasturbinen, Luft- und Raumfahrtantriebe (GLR) |
| Hinterlegungsdatum: | 16 Apr 2018 14:49 |
| Letzte Änderung: | 06 Mär 2020 07:20 |
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