Cristin-resultat-ID: 1188978
Sist endret: 13. januar 2015, 13:46
NVI-rapporteringsår: 2014
Resultat
Vitenskapelig artikkel
2014

Modeling radiation in particle clouds: on the importance of inter-particle radiation for pulverized solid fuel combustion

Bidragsytere:
  • Nils Erland L Haugen og
  • Reginald E. Mitchell

Tidsskrift

Heat and Mass Transfer
ISSN 0947-7411
e-ISSN 1432-1181
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2014
Open Access

Importkilder

Scopus-ID: 2-s2.0-84918555646
Scopus-ID: 2-s2.0-84939986030

Beskrivelse Beskrivelse

Tittel

Modeling radiation in particle clouds: on the importance of inter-particle radiation for pulverized solid fuel combustion

Sammendrag

The importance of inter-particle radiation for clusters of gray and diffuse particles is investigated. The radiative cooling of each individual particle is found to vary strongly with its position in the cluster, and a “mean” radiative particle cooling term is proposed for single particle simulations of particle clusters or for high detail simulation, like Direct Numerical Simulations of small sub-volumes of large clusters of particles. Radiative cooling is shown to be important both for furnaces for coal gasification and coal combustion. Broadening the particle size distribution is found to have just a minor effect on the radiative particle cooling. This is particularly the case for large and dense particle clusters where there is essentially no effect of size distribution broadening at all. For smaller and more dilute particle clusters, the effect of distribution broadening is clear but still not dominant.

Bidragsytere

Nils Erland L Haugen

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og prosessteknikk ved Norges teknisk-naturvitenskapelige universitet
  • Tilknyttet:
    Forfatter
    ved Termisk energi ved SINTEF Energi AS

Reginald E. Mitchell

  • Tilknyttet:
    Forfatter
    ved Stanford University
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