کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11006644 1508596 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous reconstruction of temperature and concentration profiles of soot and metal-oxide nanoparticles in asymmetric nanofluid fuel flames by inverse analysis
ترجمه فارسی عنوان
بازسازی همزمان دما و پروفیل های غلظت نانوذرات دود و فلزات اکسید در شعله های سوخت نانوفیلد نامتقارن با استفاده از آنالیز معکوس
موضوعات مرتبط
مهندسی و علوم پایه شیمی طیف سنجی
چکیده انگلیسی
An inverse analysis based on the flame emission spectrum technique is presented for the simultaneous reconstruction of two-dimensional (2D) temperature and concentration fields of soot and metal-oxide nanoparticles in the asymmetric nanofluid fuel flames by means of CCD cameras. Four CCD cameras located around the flame cross-section were used to capture the line-of-sight flame emission radiation intensities which were disintegrated to determine the radiation emission source by Least Squares QR algorithm (LSQR) algorithm. The flame cross-section was uniformly divided into several sub-squares with various grid numbers and the relationship between the grid number and the reconstruction precision was investigated in details. Considering the tradeoff between reconstruction resolution and accuracy, the optimal grid number was chosen to be 10 × 10. Satisfactory estimate of the three unknown fields obtained even with the signal to noise ratio of the measurement system as low as 46 dB. Numeral analyses show that the proposed reconstruction method is effective and robust for concurrent reconstructing the temperature and concentration profiles of soot and metal-oxide nanoparticles in the asymmetric nanofluid fuel flames.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 219, November 2018, Pages 174-185
نویسندگان
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