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Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-23332
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dc.contributor.authorDurdina, Lukas-
dc.contributor.authorBrem, Benjamin-
dc.contributor.authorElser, Miriam-
dc.contributor.authorSchönenberger, David-
dc.contributor.authorAnet, Julien-
dc.date.accessioned2021-10-29T08:45:49Z-
dc.date.available2021-10-29T08:45:49Z-
dc.date.issued2021-08-
dc.identifier.urihttps://eac2021.co.uk/wp-content/uploads/2021/08/EAC2021-Book-of-Abstracts.pdfde_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/23332-
dc.description.abstractAircraft gas turbine engines emit soot agglomerates with varying size, shape, and composition as a function of their operating condition. A useful parameter, which accounts for particle morphology, is effective density. Effective density is used to relate particle number and mass emissions in aviation PM emission models. However, measurement data of PM effective density from commercial aircraft turbine engines are very limited. Here, we report the size‐dependent effective density of PM sampled from commercial aircraft turbine engines in an engine test cell using a standardized sampling and measurement system. We used tandem DMA‐CPMA classification as in our previous study (Durdina et al. 2014). The novelty of this work is reduced scan time from over 10 minutes down to 1 minute per sample with the same hardware configuration, wider range of particle sizes, measurement of different engines, and a larger database with better data quality. The fast method allowed us to measure various engine types during their post‐overhaul test runs with short test points. We also performed effective density measurements during two dedicated test campaigns of the same engine. These campaigns investigated the effects of an alternative fuel blend on emissions and the evolution of the exhaust plume downstream of the engine exit plane. In the latter campaign, the effective density was measured with and without the treatment with a catalytic stripper approximately 25 m downstream of the engine exit plane. Figure 1 shows the compiled results obtained for all engines and fuels tested with exhaust samples taken at the engine exit plane and 25 m downstream with a catalytic stripper. The results confirm the thrust dependence of the effective density distributions reported previously. The most distinct differences are between the effective density distributions at idle thrust (Figure 1, a) and medium to high thrust (Figure 1, b). This trend was qualitatively the same for all engines tested. In contrast to our previous report, the effective densities at medium and high thrust did not follow the mass‐mobility relationship determined previously. The best fit of the data is an exponential function. The fit functions determined have potential applications in aircraft PM emissions modeling and measurement. The size‐dependent densities can be used to estimate PM mass concentration from particle size distributions measured using mobility particle sizers. The density functions can be used to improve particle loss correction models in sampling systems for aircraft engine emissions.de_CH
dc.language.isoende_CH
dc.publisherThe Aerosol Societyde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectAviation emissionde_CH
dc.subjectEffective densityde_CH
dc.subjectParticulate matterde_CH
dc.subjectBlack carbonde_CH
dc.subjectAir qualityde_CH
dc.subject.ddc363: Umwelt- und Sicherheitsproblemede_CH
dc.subject.ddc629: Luftfahrt- und Fahrzeugtechnikde_CH
dc.titleEffective density of aircraft engine PM revisited : effects of engine thrust, engine type, fuel, and sample conditioningde_CH
dc.typeKonferenz: Posterde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitZentrum für Aviatik (ZAV)de_CH
dc.identifier.doi10.21256/zhaw-23332-
zhaw.conference.detailsEuropean Aerosol Conference (EAC2021), online, 30 August - 3 September 2021de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.start452de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewPeer review (Abstract)de_CH
zhaw.title.proceedingsBook of abstract for the 2021 European Aerosol Conferencede_CH
zhaw.webfeedMeteorology, Environment and Air Traffic (ZAV)de_CH
zhaw.funding.zhawAGEAIR II: Vermessung der Gas- und Partikelschadstoffemissionen von Mantelstrom- und Helikoptertriebwerken sowie Abschätzung des Effektes vom Triebwerkverschleiss auf die Emissionsqualitätde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
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Durdina, L., Brem, B., Elser, M., Schönenberger, D., & Anet, J. (2021). Effective density of aircraft engine PM revisited : effects of engine thrust, engine type, fuel, and sample conditioning [Conference poster]. Book of Abstract for the 2021 European Aerosol Conference, 452. https://doi.org/10.21256/zhaw-23332
Durdina, L. et al. (2021) ‘Effective density of aircraft engine PM revisited : effects of engine thrust, engine type, fuel, and sample conditioning’, in Book of abstract for the 2021 European Aerosol Conference. The Aerosol Society, p. 452. Available at: https://doi.org/10.21256/zhaw-23332.
L. Durdina, B. Brem, M. Elser, D. Schönenberger, and J. Anet, “Effective density of aircraft engine PM revisited : effects of engine thrust, engine type, fuel, and sample conditioning,” in Book of abstract for the 2021 European Aerosol Conference, Aug. 2021, p. 452. doi: 10.21256/zhaw-23332.
DURDINA, Lukas, Benjamin BREM, Miriam ELSER, David SCHÖNENBERGER und Julien ANET, 2021. Effective density of aircraft engine PM revisited : effects of engine thrust, engine type, fuel, and sample conditioning. In: Book of abstract for the 2021 European Aerosol Conference [online]. Conference poster. The Aerosol Society. August 2021. S. 452. Verfügbar unter: https://eac2021.co.uk/wp-content/uploads/2021/08/EAC2021-Book-of-Abstracts.pdf
Durdina, Lukas, Benjamin Brem, Miriam Elser, David Schönenberger, and Julien Anet. 2021. “Effective Density of Aircraft Engine PM Revisited : Effects of Engine Thrust, Engine Type, Fuel, and Sample Conditioning.” Conference poster. In Book of Abstract for the 2021 European Aerosol Conference, 452. The Aerosol Society. https://doi.org/10.21256/zhaw-23332.
Durdina, Lukas, et al. “Effective Density of Aircraft Engine PM Revisited : Effects of Engine Thrust, Engine Type, Fuel, and Sample Conditioning.” Book of Abstract for the 2021 European Aerosol Conference, The Aerosol Society, 2021, p. 452, https://doi.org/10.21256/zhaw-23332.


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