Analysis of a Quasi-Two-Dimensional Flamelet Model on a Three-Feed Non-premixed Oxy-Combustion Burner
| العنوان: | Analysis of a Quasi-Two-Dimensional Flamelet Model on a Three-Feed Non-premixed Oxy-Combustion Burner |
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| المؤلفون: | Toshiaki Kitagawa, Heinz Pitsch, Panlong Yu, Hiroyuki Nishida, Hiroaki Watanabe, Isao Yuri |
| المصدر: | Flow, Turbulence and Combustion. 108:303-327 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | General Chemical Engineering, General Physics and Astronomy, 02 engineering and technology, Mechanics, Type (model theory), Combustion, 01 natural sciences, Diluent, 010305 fluids & plasmas, Scalar dissipation, 020303 mechanical engineering & transports, Mixture fraction, 0203 mechanical engineering, Fuel gas, 0103 physical sciences, Combustor, Physical and Theoretical Chemistry, Mixing (physics), Mathematics |
| الوصف: | Three-feed combustion systems in which fuel gas, oxygen, and diluent ( $$\hbox {CO}_{2}$$ ) are issued into a combustor are key components to realize an oxy-fuel type gas turbine in a zero-emission plant. Yet, simulations of such systems using mixture fraction-based models are difficult, since multiple mixture fractions are required to describe the system. In this study, large-eddy simulations (LES) with different formulations of non-adiabatic quasi-two-dimensional flamelet (Q2DF) models were performed on a three-feed non-premixed swirl burner. The Q2DF models are derived based on the treatments regarding the third stream; the diluent stream is put in the oxidizer side and/or in the fuel side, giving rise to three models called Q2DF1, Q2DF2, and Q2DF3 models. Results show that the three Q2DF models can predict the results of the experiment well; however, the deviations could not be overlooked. The analysis shows that the differences between the three models become apparent as the mixture fraction of the inactive third stream ( $$Z_3$$ ) evolves very large, otherwise, the three models give almost the same results. It is confirmed that for a pure inactive diluent third stream when $$Z_3$$ is quite large, its scalar dissipation rate ( $$\chi _3$$ ) plays an important role and the mixing way (premix or non-premix) of the third stream with other streams should be taken into account, however, the influence of $$\chi _3$$ on the performance of the three models is quite limited in the condition of a smaller $$Z_3$$ , for instance, less than 0.8, and thus the mixing way of the third stream in the three models will not affect the system. |
| تدمد: | 1573-1987 1386-6184 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::fecdf25fb3147c352578baa9ec48f02a https://doi.org/10.1007/s10494-021-00274-x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........fecdf25fb3147c352578baa9ec48f02a |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15731987 13866184 |
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