Numerical Study of a Cyclonic Combustor under Moderate or Intense Low-Oxygen Dilution Conditions Using Non-adiabatic Tabulated Chemistry
| Autor: | Nedunchezhian Swaminathan, Antonio Cavaliere, Xiao Jing Lv, N. Anh Khoa Doan, Zhi X. Chen, Giancarlo Sorrentino, Giuseppe Ceriello |
|---|---|
| Přispěvatelé: | Chen, Zhi X., Doan, N. Anh Khoa, Lv, Xiao Jing, Swaminathan, Nedunchezhian, Ceriello, Giuseppe, Sorrentino, Giancarlo, Cavaliere, Antonio, Chen, ZX [0000-0002-1149-1998], Ceriello, G [0000-0002-3730-9242], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
business.industry
020209 energy General Chemical Engineering Homogeneity (statistics) Energy Engineering and Power Technology Probability density function 02 engineering and technology Mechanics Combustion Dilution 4017 Mechanical Engineering Fuel Technology Heat transfer 0202 electrical engineering electronic engineering information engineering Combustor CFD Tabulated Chemistry MILD Combustion Reactive flow 4002 Automotive Engineering Chemical Engineering (all) Exhaust gas recirculation business Adiabatic process 40 Engineering |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|