2011
DOI: 10.1016/j.proci.2010.07.063
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Abstract: Large eddy simulations (LES) are used in a CFD model to simulate air-and oxy-fired pulverised coal combustion in a 0.5 MWth combustion test facility. Simulations are carried out using two different burners, namely, a triple staged low-NOx wall fired burner and an IFRF Aerodynamically Air-Staged Burner (AASB). Non-gray radiation is considered in order to deal with the spectral nature of absorption and emission by high levels of combustion products in oxy-fuel combustion.Predictions using LES are compared with R… Show more

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Cited by 98 publications
(28 citation statements)
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“…single particle, small domain) due to their large computing costs. In that regard, the Eddy Breakup (EBU) (e.g., [8,9,11,15] ) or the Eddy Dissipation Model [16,17] have often been utilized. They are based on infinitely fast chemistry assumptions whose reaction rate is directly connected to turbulent scales (dissipation) which in turn prohibits accounting for chemical time scales.…”
Section: Introductionmentioning
confidence: 99%
“…single particle, small domain) due to their large computing costs. In that regard, the Eddy Breakup (EBU) (e.g., [8,9,11,15] ) or the Eddy Dissipation Model [16,17] have often been utilized. They are based on infinitely fast chemistry assumptions whose reaction rate is directly connected to turbulent scales (dissipation) which in turn prohibits accounting for chemical time scales.…”
Section: Introductionmentioning
confidence: 99%
“…Yamamoto et al [6] performed a LES of a pre-heated pulverised coal flame. Edge et al [7] and Gharebaghi et al [8] carried out the first LES of a 1 MWth scale test facility. Both studies showed that LES can provide more detailed information than a RANS simulation.…”
Section: Introductionmentioning
confidence: 99%
“…The gray-gas model is a quite simple implementation if compared with other spectral models due to the single constant absorption coefficient consideration. This approximation is unrealistic for gases, since they have a strong variation along the wavenumber, but it can still be found in modern studies on combustion [9,11,33] due to its simplicity.…”
Section: The Gray-gas (Gg) Modelmentioning
confidence: 99%