Bluff-body effect on thermal and NO emission characteristics in a micro-planar combustor fueled with premixed ammonia-oxygen

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dc.contributor.authorCai, Tao
dc.contributor.authorZhao, Dan
dc.contributor.authorJiaqiang, E.
dc.date.accessioned2020-09-15T22:13:39Z
dc.date.available2020-09-15T22:13:39Z
dc.date.issued2020en
dc.date.updated2020-06-04T21:17:51Z
dc.description.abstractcombustor fueled with premixed ammonia/oxygen using three-dimensional numerical simulations. For this, a three-dimensional model is developed with a detailed chemical kinetic mechanism. The effects of 1) the presence/ absence of the bluff-body, 2) its dimensionless height h and 3) its dimensionless axial location l are examined. It is found that the implementation of a bluff-body can significantly affects the thermal and NO emission characteristics. Up to 39.1 % reduction of NO formation and 41.6 K increase in the outer wall temperature (OWT) can be achieved as the bluff-body is optimized, when compared to the case in the absence of the bluff-body. Furthermore, increasing h leads to OWT being increased, but it can suppress the NO generation in some cases. In addition, increasing l is shown to be involved with a high OWT and a low NO concentration, mainly due to the variation in the flow field and thus heat transfer characteristics. Finally, the dimensionless pressure loss is strongly affected by the NH3 flow rate, and the dimensionless parameters h and l. This work reveals that implementing a proper designed bluff-body is an effective way to enhance thermal performance and reduce NOx emission.en
dc.identifier.citationCai T, Zhao D, Jiaqiang E (2020). Bluff-body effect on thermal and NO emission characteristics in a micro-planar combustor fueled with premixed ammonia-oxygen. Chemical Engineering and Processing - Process Intensification. Volume 153, July 2020, 107979en
dc.identifier.doihttps://doi.org/10.1016/j.cep.2020.107979
dc.identifier.issn0255-2701
dc.identifier.urihttps://hdl.handle.net/10092/101035
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier BVen
dc.rightsAll rights reserved unless otherwise stateden
dc.rights.urihttp://hdl.handle.net/10092/17651en
dc.subjectNOx emissionen
dc.subjectAmmoniaen
dc.subjectBluff-bodyen
dc.subjectMicro-combustionen
dc.subjectThermal performanceen
dc.subjectDimensionless pressure lossen
dc.subject.anzsrcFields of Research::40 - Engineering::4004 - Chemical engineering::400402 - Chemical and thermal processes in energy and combustionen
dc.titleBluff-body effect on thermal and NO emission characteristics in a micro-planar combustor fueled with premixed ammonia-oxygenen
dc.typeJournal Articleen
uc.collegeFaculty of Engineering
uc.departmentMechanical Engineering
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