Direct Numerical Simulation of biomass pyrolysis and combustion with gas phase reactions

A. Aswasthi, Johannes G.M. Kuerten, Bernardus J. Geurts

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)
    208 Downloads (Pure)


    We present Direct Numerical Simulation of biomass pyrolysis and combustion in a turbulent channel flow. The model includes simplified models for biomass pyrolysis and char combustion along with a model for particle tracking. The gas phase is modelled as a mixture of reacting gas species. The gas-particle interactions for mass, momentum, and energy exchange are included by two-way coupling terms. The effect of two-way coupling on the conversion time of biomass particles is found noticeable for particle volume fractions $> 10^{-5}$. We also observe that at constant volume fraction the effect of two-way coupling increases as the particle size is reduced, due to the higher total heat exchange area in case of smaller particles. The inclusion of gas phase homogeneous reactions in the DNS model decreases the biomass pyrolysis time due to higher gas temperatures. In contrast, including gas phase reactions increases the combustion time of biomass due to the lower concentration of oxygen at the particle surface.
    Original languageEnglish
    Title of host publication7th European Thermal-Sciences Conference (Eurotherm2016)
    Subtitle of host publication19–23 June 2016, Krakow, Poland
    Place of PublicationBristol, UK
    PublisherInstitute of Physics (IOP)
    Number of pages9
    Publication statusPublished - 19 Jun 2016
    Event7th European Thermal-Sciences Conference, Eurotherm 2016 - Krakow, Poland
    Duration: 19 Jun 201623 Jun 2016
    Conference number: 7

    Publication series

    NameJournal of Physics: Conference Series
    ISSN (Print)1742-6588
    ISSN (Electronic)1742-6596


    Conference7th European Thermal-Sciences Conference, Eurotherm 2016
    Abbreviated titleEurotherm


    • EWI-27440
    • IR-103046
    • METIS-320897


    Dive into the research topics of 'Direct Numerical Simulation of biomass pyrolysis and combustion with gas phase reactions'. Together they form a unique fingerprint.

    Cite this