A gas radiation property model applicable to general combustion CFD and its demonstration in oxy-fuel combustion simulation

Chungen Yin, Shashank Singh , Sergio Sanchez Romero

Research output: Contribution to journalConference article in JournalResearchpeer-review

5 Citations (Scopus)
295 Downloads (Pure)

Abstract

As a good compromise between computational efficiency and accuracy, the weighted-sum-of-gray-gases model (WSGGM) is often used in computational fluid dynamics (CFD) modeling of combustion processes for evaluating gas radiative properties. However, the WSGGMs still have practical limitations (e.g., difficult to naturally accommodate different combustion environments or accurately address species variations in a flame or properly account for the impacts of participating species other than H2O and CO2) fostering different WSGGMs. In this paper, a gas radiation model, computationally efficient and practically accurate and applicable to general combustion CFD, is presented, programmed and verified. The model is implemented in CFD simulation of a 0.8 MW oxy-fuel furnace, via which the applicability and usefulness of the model in combustion CFD is demonstrated. On the contrary, the usefulness of the WSGGMs in oxy-fuel combustion CFD is found to be compromised, mainly because that the important impacts of the high levels of CO under oxy-fuel combustion cannot be accounted for in the current framework of the WSGGMs.
Original languageEnglish
JournalEnergy Procedia
Volume120
Pages (from-to)564-571
Number of pages8
ISSN1876-6102
DOIs
Publication statusPublished - Aug 2017
Event11th European Conference on Industrial Furnaces and Boilers - Albufeira, Portugal
Duration: 18 Apr 201721 Apr 2017
http://infub.pt/Geral/paginas.aspx?cod=101

Conference

Conference11th European Conference on Industrial Furnaces and Boilers
Country/TerritoryPortugal
CityAlbufeira
Period18/04/201721/04/2017
Internet address

Keywords

  • CFD
  • Combustion
  • Radiation
  • Weighted-sum-of-gray-gases mode
  • Exponential wide band model

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