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dc.contributor.authorBen Houidi, Moez
dc.contributor.authorSotton, Julien
dc.contributor.authorBellenoue, Marc
dc.contributor.authorStrozzi, Camille
dc.date.accessioned2018-09-27T07:01:17Z
dc.date.available2018-09-27T07:01:17Z
dc.date.issued2018-09-17
dc.identifier.citationBen Houidi M, Sotton J, Bellenoue M, Strozzi C (2018) Effects of low temperature heat release on the aerodynamics of a flat piston rapid compression machine: Impact on velocity and temperature fields. Proceedings of the Combustion Institute. Available: http://dx.doi.org/10.1016/j.proci.2018.08.059.
dc.identifier.issn1540-7489
dc.identifier.doi10.1016/j.proci.2018.08.059
dc.identifier.urihttp://hdl.handle.net/10754/628806
dc.description.abstractThe study of auto-ignition under temperature stratification is of great interest. Indeed, further understanding of the thermo-kinetic interactions and its influence on the combustion propagation regime is needed. In a previous work [1], experiments in a flat piston Rapid Compression Machine (RCM) demonstrated that the apparent propagation of reaction fronts is highly influenced by the typical temperature stratification observed at inert conditions. Nevertheless, the influence of low temperature heat release (LTHR) on the internal aerodynamics and temperature of the RCM is not well understood. In the present study, we first address the LTHR-flow interaction then address the LTHR-temperature interaction. We performed 2D-PIV experiments at 10 kHz for inert and reactive lean isooctane mixtures. We averaged spatially the acceleration to present the time evolution during the cool flame period. We found that the normalized acceleration has a decreasing trend in both inert and reactive tests. No significant effect of the cool flame was observed on the trend. We performed temperature measurements using thin wire (7.6 µm) type K thermocouples at inert and reactive n-hexane mixtures (same test conditions of Fig. 7 in [1]). The temperature evolution of the hot (adiabatically compressed) and the colder gases were recorded when cool flame occurs. The corrected gas temperature showed good agreement with the theoretical adiabatic core temperature as well as previous measurements with toluene LIF. In the tested case, we found that the cool flame induces an equal temperature rise of approximately 110 K in both the adiabatically compressed and the colder vortex gases. These results confirm quantitatively that LTHR does not significantly affect the mixing of the temperature stratification of our flat piston RCM. In the studied test conditions, the temperature stratification is conserved globally despite the LTHR.
dc.description.sponsorshipWe thank Mr. Herve Arlaud and Dr. Gildas Lalizel for providing the thermocouples for this study. We thank Mr. Alain Claverie and Mr. Antoine Delicourt for their assistance in the PIV experiments. We acknowledge the financial support of ANRT (PN: ANR-PLASMAFLAME-2011BS0902501).
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S1540748918306035
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Proceedings of the Combustion Institute. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Proceedings of the Combustion Institute, [, , (2018-09-17)] DOI: 10.1016/j.proci.2018.08.059. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectRCM
dc.subjectCool flame
dc.subjectTwo-stage auto-ignition
dc.subjectN-hexane
dc.subjectIsooctane
dc.titleEffects of low temperature heat release on the aerodynamics of a flat piston rapid compression machine: Impact on velocity and temperature fields
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalProceedings of the Combustion Institute
dc.eprint.versionPost-print
dc.contributor.institutionISAE-ENSMA, Institut Pprime, Departement Fluide Thermique Combustion, BP 40109, Teleport2, 1 Avenue Clement Ader, F86961 Chasseneuil-du-Poitou Cedex, France
kaust.personBen Houidi, Moez
refterms.dateFOA2018-09-30T11:50:12Z
dc.date.published-online2018-09-17
dc.date.published-print2019


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