کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6641708 | 461163 | 2013 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct numerical simulation of non-premixed syngas burning with detailed chemistry
ترجمه فارسی عنوان
شبیه سازی مستقیم عددی از سوزاندن گاز سنتزی بدون ترکیب شیمیایی با شیمی دقیق
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
H2/CO syngas non-premixed impinging jet flames were studied using three-dimensional direct numerical simulation (DNS) and flamelet generated manifolds (FGMs) based on detailed chemical kinetics. The computational domain employed has a size of four jet nozzle diameters in the streamwise direction and 12 jet nozzle diameters in the cross-streamwise direction. The results presented in this study were performed using a uniform Cartesian grid with 200 Ã 600 Ã 600 points. The Reynolds number used was Re = 2000, based on the reference quantities. The spatial discretisation was carried out using a sixth-order accurate compact finite difference scheme and the discretised equations were time-advanced using a third-order accurate fully explicit compact-storage Runge-Kutta scheme. Results show that the ratio of H2 and CO in the syngas mixture significantly affects the flame characteristics including the near-wall flame structure. The high diffusivity of H2-rich syngas flame leads to form weaker vortices and a thicker flame. In contrast, CO-rich syngas flame leads to form a thinner flame with strong wrinkles. Moreover, the DNS results suggest that the preferential diffusion influences the local flame structure for the simulated low Reynolds number H2 flame.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 107, May 2013, Pages 343-355
Journal: Fuel - Volume 107, May 2013, Pages 343-355
نویسندگان
K.K.J. Ranga Dinesh, X. Jiang, J.A. van Oijen,