کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5430777 1397419 2007 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coupled radiation and natural convection: Different approaches of the slw model for a non-gray gas mixture
موضوعات مرتبط
مهندسی و علوم پایه شیمی طیف سنجی
پیش نمایش صفحه اول مقاله
Coupled radiation and natural convection: Different approaches of the slw model for a non-gray gas mixture
چکیده انگلیسی

The coupling between non-gray radiation heat transfer and convection-conduction heat transfer is studied. The spectral line weighted sum of gray gases model (slw) is used to account for non-gray radiation properties. The aim of this work is to analyze the influence of the different approaches used when calculating the parameters of the slw model. Such strategies include the use of optimized model coefficients to reduce the number of operations, and the interpolation of the distribution function instead of the use of mathematical correlations. Non-gray calculations are also compared to gray solutions using the Planck mean absorption coefficient, which can be also calculated with the slw model. The radiative transfer equation (rte) is solved by means of the discrete ordinates method (dom). A natural convection driven cavity is chosen to couple radiation and conduction-convection energy transfer. Several cases, with a significant variation of the ratio between radiation to convection heat transfer, as well as the ratio between radiation to conduction heat transfer, are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 107, Issue 1, September 2007, Pages 30-46
نویسندگان
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