کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9624536 | 457929 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Emission spectroscopy of hot water vapor from H2-air deflagrative combustion in a closed cylinder
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The water molecule is often selected as a probe of its environment to retrieve distributions of temperature and concentration in a hot gas by emission spectroscopy. A combustion chamber closed at both ends has been designed and a fast CCD camera coupled to an Ebert-Fastie spectrometer was used to experimentally validate the current spectroscopic parameters of H2O at high pressures and temperatures. Time-resolved H2O emission spectra from the deflagrative combustion of H2 in air were recorded for temperatures from 2500 to 2800 K and final pressures from 2 to 40 bar in the spectral region 10,332-10,496 cmâ1. A time-dependent numerical model was developed; it predicts reliably the observed dynamic pressures of the H2-air flame after initiation of combustion. Reasonably uniform distributions of temperature and [H2O] simulated by this combustion code have been introduced into a line-by-line radiative transfer code. Good agreement between calculated and experimental spectra at the end of combustion was obtained, except for a few intense lines, which can be better reproduced by improving the parameters for each spectroscopic line.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 140, Issue 4, March 2005, Pages 319-331
Journal: Combustion and Flame - Volume 140, Issue 4, March 2005, Pages 319-331
نویسندگان
P. Chelin, C. Camy-Peyret, V. Pina, P. Alkhoury, D. Davidenko,