Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | AIAA Aerospace Sciences Meeting |
| Herausgeber (Verlag) | American Institute of Aeronautics and Astronautics Inc. (AIAA) |
| Auflage | 210059 |
| ISBN (Print) | 9781624105241 |
| Publikationsstatus | Veröffentlicht - 7 Jan. 2018 |
| Veranstaltung | AIAA Aerospace Sciences Meeting, 2018 - Kissimmee, USA / Vereinigte Staaten Dauer: 8 Jan. 2018 → 12 Jan. 2018 |
Publikationsreihe
| Name | AIAA Aerospace Sciences Meeting, 2018 |
|---|---|
| Nummer | 210059 |
Abstract
Defective components in the hot-gas path (HGP) of jet engines have an impact on the local flow, and can lead to irregularities in the density distribution that persist into the exhaust jet. By comparing the density pattern in the exhaust jet with a design state, defects in the HGP of jet engines can be detected without disassembly. In this paper, the Background-Oriented Schlieren (BOS) Method is proposed for this exhaust jet analysis. BOS can reconstruct three-dimensional density fields of complex flows when used in a tomographic setup. The BOS method is used to analyze the exhaust jet of a model combustor with different modifications, which simulate possible defects in combustion chambers of aircraft engines. The BOS method is combined with Fourier-Transform Infrared Spectroscopy (FTIR) measurements to assess the possibilities and limits of BOS for a non-intrusive defect detection in combustion chambers. It is shown, that BOS can detect different types of combustor defects through an exhaust jet analysis. The limits of the BOS method are reached, when different defects have the same impact on the density distribution for different reasons. In these cases, BOS can only detect that there are defects while FTIR offers an additional opportunity to differentiate between them. The time-expensive and intrusive measurement procedure makes FTIR itself non-applicable for measurements on jet engines, but shows the potential which optical measurement techniques for concentration measurement would have. The results show that BOS by itself offers a promising opportunity for a non-intrusive defect detection in jet engines.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Luft- und Raumfahrttechnik
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AIAA Aerospace Sciences Meeting. 210059. Aufl. American Institute of Aeronautics and Astronautics Inc. (AIAA), 2018. (AIAA Aerospace Sciences Meeting, 2018; Nr. 210059).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Experimental Defect Detection in a Swirl-Burner Array Through Exhaust Jet Analysis
AU - Hartmann, Ulrich
AU - Von Der Haar, Henrik
AU - Dinkelacker, Friedrich
AU - Seume, Joerg R.
N1 - Publisher Copyright: © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2018/1/7
Y1 - 2018/1/7
N2 - Defective components in the hot-gas path (HGP) of jet engines have an impact on the local flow, and can lead to irregularities in the density distribution that persist into the exhaust jet. By comparing the density pattern in the exhaust jet with a design state, defects in the HGP of jet engines can be detected without disassembly. In this paper, the Background-Oriented Schlieren (BOS) Method is proposed for this exhaust jet analysis. BOS can reconstruct three-dimensional density fields of complex flows when used in a tomographic setup. The BOS method is used to analyze the exhaust jet of a model combustor with different modifications, which simulate possible defects in combustion chambers of aircraft engines. The BOS method is combined with Fourier-Transform Infrared Spectroscopy (FTIR) measurements to assess the possibilities and limits of BOS for a non-intrusive defect detection in combustion chambers. It is shown, that BOS can detect different types of combustor defects through an exhaust jet analysis. The limits of the BOS method are reached, when different defects have the same impact on the density distribution for different reasons. In these cases, BOS can only detect that there are defects while FTIR offers an additional opportunity to differentiate between them. The time-expensive and intrusive measurement procedure makes FTIR itself non-applicable for measurements on jet engines, but shows the potential which optical measurement techniques for concentration measurement would have. The results show that BOS by itself offers a promising opportunity for a non-intrusive defect detection in jet engines.
AB - Defective components in the hot-gas path (HGP) of jet engines have an impact on the local flow, and can lead to irregularities in the density distribution that persist into the exhaust jet. By comparing the density pattern in the exhaust jet with a design state, defects in the HGP of jet engines can be detected without disassembly. In this paper, the Background-Oriented Schlieren (BOS) Method is proposed for this exhaust jet analysis. BOS can reconstruct three-dimensional density fields of complex flows when used in a tomographic setup. The BOS method is used to analyze the exhaust jet of a model combustor with different modifications, which simulate possible defects in combustion chambers of aircraft engines. The BOS method is combined with Fourier-Transform Infrared Spectroscopy (FTIR) measurements to assess the possibilities and limits of BOS for a non-intrusive defect detection in combustion chambers. It is shown, that BOS can detect different types of combustor defects through an exhaust jet analysis. The limits of the BOS method are reached, when different defects have the same impact on the density distribution for different reasons. In these cases, BOS can only detect that there are defects while FTIR offers an additional opportunity to differentiate between them. The time-expensive and intrusive measurement procedure makes FTIR itself non-applicable for measurements on jet engines, but shows the potential which optical measurement techniques for concentration measurement would have. The results show that BOS by itself offers a promising opportunity for a non-intrusive defect detection in jet engines.
UR - http://www.scopus.com/inward/record.url?scp=85141603458&partnerID=8YFLogxK
U2 - 10.2514/6.2018-0303
DO - 10.2514/6.2018-0303
M3 - Conference contribution
AN - SCOPUS:85141603458
SN - 9781624105241
T3 - AIAA Aerospace Sciences Meeting, 2018
BT - AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc. (AIAA)
T2 - AIAA Aerospace Sciences Meeting, 2018
Y2 - 8 January 2018 through 12 January 2018
ER -