کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7712967 | 1497423 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modeling of the continuous (blue) radiation in hydrogen flames
ترجمه فارسی عنوان
مدل سازی تابش مستمر (آبی) در شعله های هیدروژن
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کلمات کلیدی
شعله هیدروژن، تابش آبی، شیمی معدنی، مدل سازی تابش
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
The blue continuous radiation from hydrogen flames is studied experimentally and numerically in a laminar hydrogen-oxygen jet flame at variable pressure and oxidizer composition. Self-absorption of the blue radiation is not observed. Two chemiluminescence models from literature, forming either excited water vapor or excited hydrogen peroxide, are investigated. Their performances to predict total and spatially resolved blue emissivity is assessed by comparison between numerical and experimental data. Optimum parameters for the two unknown modeling parameters, activation energy and quenching, are presented. Although the H2O2* chemiluminescence model delivers slightly better results, it cannot be proven axiomatically that it is the only physical source of the blue radiation. However, the emissivity of the blue radiation can well be simulated numerically by taking the square of the OH concentration for high temperatures and pressures. For lower temperatures, temperature and quenching need to be considered additionally to model the blue radiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 2, 12 January 2016, Pages 1293-1303
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 2, 12 January 2016, Pages 1293-1303
نویسندگان
Thomas Fiala, Thomas Sattelmayer,