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Characterisation of cyclic variability in an optically accessible IC Engine by means of phase-independent POD

Böhm, Benjamin und di Mare, Francesca und Dreizler, Andreas (2010) Characterisation of cyclic variability in an optically accessible IC Engine by means of phase-independent POD. In: Proceedings of the LES4ICE International Conference. IFP. LES for Internal Combustion Engine Flows, 18. Nov. - 19. Nov. 2010, Paris, Frankreich.

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Kurzfassung

Investigation of cyclic variability in engine operation has recently received new impulse with the widespread application of advanced numerical and experimental techniques. The present work attempts to shed some light on the existence and nature of correlations between coherent structures dynamics and cyclic variability in IC engines by means of phase-independent Proper Orthogonal Decomposition applied to highly-resolved PIV measurements obtained in an optically accessible, motored engine. Analysis of the conditional means and variances of the reconstruction coefficients reveal interesting patterns in the break-up of coherent structures which are also confirmed by experimental observation and leave room for speculation on the true nature of the flow field at different crank angles. A first attempt has also been carried out to reconstruct missing information from available measurements, with encouraging results: the development of such interpolation/reconstruction technique could obviously have a great impact on the reduction of the cost normally involved in experimental and computational campaigns.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Characterisation of cyclic variability in an optically accessible IC Engine by means of phase-independent POD
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Böhm, BenjaminCSM, TU-Darmstadt
di Mare, FrancescaDLR, Institute of Propulsion Technology
Dreizler, AndreasCSM, TU-Darmstadt
Datum:19 November 2010
Erschienen in:Proceedings of the LES4ICE International Conference
Referierte Publikation:Ja
In ISI Web of Science:Nein
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Angelberger, ChristianIFP
Verlag:IFP
Status:veröffentlicht
Stichwörter:LES. PIV, IC, POD
Veranstaltungstitel:LES for Internal Combustion Engine Flows
Veranstaltungsort:Paris, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:18. Nov. - 19. Nov. 2010
Veranstalter :IFP
HGF - Forschungsbereich:keine Zuordnung
HGF - Programm:keine Zuordnung
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:keine Zuordnung
DLR - Forschungsgebiet:keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):anderes
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Antriebstechnik > Numerische Methoden
Hinterlegt von: Francesca Mare
Hinterlegt am:19 Jan 2012 09:36
Letzte Änderung:12 Dez 2013 21:34

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