کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9599070 | 1508717 | 2005 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantitative analysis of spectral interference of spontaneous Raman scattering in high-pressure fuel-rich H2-air combustion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Quantitative analysis of spectral interference of spontaneous Raman scattering in high-pressure fuel-rich H2-air combustion Quantitative analysis of spectral interference of spontaneous Raman scattering in high-pressure fuel-rich H2-air combustion](/preview/png/9599070.png)
چکیده انگلیسی
We present a theoretical study of the spectral interferences in the spontaneous Raman scattering spectra of major combustion products in 30-atm fuel-rich H2-air flames. An effective methodology is introduced to choose an appropriate line-shape model for simulating Raman spectra in high-pressure combustion environments. The Voigt profile with the additive approximation assumption was found to provide a reasonable model of the spectral line shape for the present analysis. The rotational/vibrational Raman spectra of H2, N2, and H2O were calculated using an anharmonic-oscillator model using the latest collisional broadening coefficients. The calculated spectra were validated with data obtained in a 10-atm fuel-rich H2-air flame and showed excellent agreement. Our quantitative spectral analysis for equivalence ratios ranging from 1.5 to 5.0 revealed substantial amounts of spectral cross-talk between the rotational H2 lines and the N2O-/Q-branch; and between the vibrational H2O(0,3) line and the vibrational H2O spectrum. We also address the temperature dependence of the spectral cross-talk and extend our analysis to include a cross-talk compensation technique that removes the interference arising from the H2 Raman spectra onto the N2, or H2O spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 94, Issues 3â4, 1 September 2005, Pages 439-466
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 94, Issues 3â4, 1 September 2005, Pages 439-466
نویسندگان
Jun Kojima, Quang-Viet Nguyen,