کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6593976 | 1423549 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of low-temperature chemistry on partially-premixed counterflow n-heptane/air flames
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
It is found that in a delimited range of operating conditions, a wide, distributed reaction zone is obtained. Different dynamics are observed in rich and lean conditions, exhibiting, respectively, a two-stage oxidation and a premixed-flame behavior: in particular, by increasing the fuel temperature, the diffusion-reaction structure typical of premixed flames is progressively lost, and an autoignition front is established. A two-stage ignition significantly affects the flame width, as well as velocity and composition profiles. Moreover, the competition between low- and high-temperature chemistry results in the presence of multiple solutions and cool flames. Overall, the impact of low temperature chemistry on ignition and flame structure was quantified through regime diagrams, which show that modification on flame regime occur in a vast region. It is also concluded that without considering these reaction paths, the ignition region would be underestimated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 188, February 2018, Pages 440-452
Journal: Combustion and Flame - Volume 188, February 2018, Pages 440-452
نویسندگان
Alessandro Stagni, Davide Brignoli, Marco Cinquanta, Alberto Cuoci, Alessio Frassoldati, Eliseo Ranzi, Tiziano Faravelli,