Numerical Study of a Cyclonic Combustor under Moderate or Intense Low-Oxygen Dilution Conditions Using Non-adiabatic Tabulated Chemistry
Energy and Fuels
American Chemical Society (ACS)
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Chen, Z., Doan, N. A. K., Lv, X., Swaminathan, S., Ceriello, G., Sorrentino, G., & Cavaliere, A. (2018). Numerical Study of a Cyclonic Combustor under Moderate or Intense Low-Oxygen Dilution Conditions Using Non-adiabatic Tabulated Chemistry. Energy and Fuels, 32 (10), 10256-10265. https://doi.org/10.1021/acs.energyfuels.8b01103
A cyclonic burner operating under moderate or intense low-oxygen dilution (MILD) conditions is simulated using a Perfectly Stirred Reactor (PSR) incorporated within a tabulated chemistry approach. A presumed joint probability density function (PDF) method is utilised with appropriate sub-models for the turbulence-chemistry interac- tion. Non-adiabatic effects are included in the PSR calculation to take into account the effects of non-negligible wall heat loss in the burner. Five different operating conditions are investigated and the computed mean temperatures agree well with measurements. A substantial improvement is observed when the non-adiabatic PSR is used highlight- ing the importance of heat transfer effects for burner configurations involving internal exhaust gas recirculation (EGR). Furthermore, enhanced reaction homogeneity is ob- served in this cyclonic configuration for the globally lean case, leading to a more spatially uniform temperature variation with MILD combustion.
ZXC and NS acknowledge the support of Mitsubishi Heavy industries, Japan. NAKD acknowledges the support of the Qualcomm European Research Studentship Fund. This work used the ARCHER UK National Supercomputing Service (http://www.archer.ac.uk) using computing time provided by the UKCTRF (e305). XJL acknowledges Shanghai Sailing Talent Fellowship (No. 17YF1409800). GC, GS and AC greatly acknowledge the COST Action SMARTCATs (CM1404), supported by COST (European Cooperation in Science and Technology, http://www.cost.eu).
Engineering and Physical Sciences Research Council (EP/K025791/1)
External DOI: https://doi.org/10.1021/acs.energyfuels.8b01103
This record's URL: https://www.repository.cam.ac.uk/handle/1810/280036