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http://bura.brunel.ac.uk/handle/2438/15522
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DC Field | Value | Language |
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dc.contributor.author | Xia, J | - |
dc.contributor.author | Vervisch, L | - |
dc.contributor.author | Liu, Y | - |
dc.contributor.author | Wang, Z | - |
dc.contributor.author | Cen, K | - |
dc.date.accessioned | 2017-12-01T14:15:02Z | - |
dc.date.available | 2017-11-01 | - |
dc.date.available | 2017-12-01T14:15:02Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Combustion Theory and Modelling, 2017, pp. 1 - 34 | en_US |
dc.identifier.issn | 1364-7830 | - |
dc.identifier.issn | 1741-3559 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/15522 | - |
dc.description.abstract | © 2017 Informa UK Limited, trading as Taylor & Francis Group The numerical modelling of alkali metal reacting dynamics in turbulent pulverised-coal combustion is discussed using tabulated sodium chemistry in large eddy simulation (LES). A lookup table is constructed from a detailed sodium chemistry mechanism including five sodium species, i.e. Na, NaO, NaO 2 , NaOH and Na 2 O 2 H 2 , and 24 elementary reactions. This sodium chemistry table contains four coordinates, i.e. the equivalence ratio, the mass fraction of the sodium element, the gas-phase temperature, and a progress variable. The table is first validated against the detailed sodium chemistry mechanism by zero-dimensional simulations. Then, LES of a turbulent pulverised-coal jet flame is performed and major coal-flame parameters compared against experiments. The chemical percolation devolatilisation (CPD) model and the partially stirred reactor (PaSR) model are employed to predict coal pyrolysis and gas-phase combustion, respectively. The response of the five sodium species in the pulverised-coal jet flame is subsequently examined. Finally, a systematic global sensitivity analysis of the sodium lookup table is performed and the accuracy of the proposed tabulated sodium chemistry approach has been calibrated. | en_US |
dc.format.extent | 1 - 34 | - |
dc.language.iso | en | en_US |
dc.title | Modelling alkali metal emissions in large-eddy simulation of a preheated pulverised-coal turbulent jet flame using tabulated chemistry | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1080/13647830.2017.1392043 | - |
dc.relation.isPartOf | Combustion Theory and Modelling | - |
pubs.publication-status | Accepted | - |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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Fulltext.pdf | 11.27 MB | Adobe PDF | View/Open |
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