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- W2325836289 abstract "A numerical modeling of a propane gas jet diffusion flame in a venturi-cascade burner, at a Reynolds number of 5100, is presented. The thermal, composition, as well as flow fields for both the baseline and venturi-cascaded flames were numerically simulated using CFD-ACE+, an advanced computational environment package. The instantaneous chemistry model was used as the reaction model. The concentration of NO was determined through CFD-POST, a post processing utility program for CFD-ACE+. The numerical results showed that, in the nearburner, mid-flame and far-burner regions, the venturi-cascaded flame had lower temperature and lower CO2 concentration than the baseline flame. However, an opposite trend was noticed for O2 concentration. The results also showed that, the venturi-cascaded flame has lower NO concentrations compared to the baseline case. The simulated flow field was used to understand the changes in the temperature and composition fields brought by the venturi-cascade. The results showed a generation of an inward flow (towards the centerline of the jet). This change in fluid dynamics accounts for the additional influx of air into the gas jet and explains the effect of venturicascading on the thermo-chemical structure of the flame. The simulated results of the effects of the venturi-cascade were in good agreement with the experimental data in the near-burner region. The numerical results were useful to interpret the experimental measurements and understand the thermo-chemical processes involved. The results showed that the prompt-NO mechanism plays an important role besides the conventional thermal-NO mechanism. Nomenclature A = Pre-exponential factor d = Burner-exit diameter D = Venturi throat diameter DI = Venturi inlet diameter E = Activation energy" @default.
- W2325836289 created "2016-06-24" @default.
- W2325836289 creator A5071970913 @default.
- W2325836289 date "2010-01-04" @default.
- W2325836289 modified "2023-09-25" @default.
- W2325836289 title "Numerical simulation of a gas jet diffusion flame in a venturicascade burner and experimental validation" @default.
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- W2325836289 doi "https://doi.org/10.2514/6.2010-223" @default.
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