کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7918351 1511099 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multiscale modelling of packed bed chemical looping reforming
ترجمه فارسی عنوان
مدل سازی چند لایه ای از اصلاح کردن حلقه بسته بندی شده شیمیایی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
A comparison of reactive flows on two distinct scales is presented here (i) Particle resolved direct numerical simulation (PR-DNS), and (ii) 1D packed bed model. The PR-DNS geometry is meshed with polyhedral elements both inside and outside the particle to directly resolve the phenomena of intra particle diffusion and external heat and mass transfer. In contrast, the 1D packed bed model incorporates appropriate closure models to compare against the PR-DNS solutions at a computational cost several magnitudes less. Simulations are performed for endothermic steam methane reforming reactions (SMR) over a range of inlet temperatures. The comparison of the results between the two approaches shows that the 1D model can adequately replicate the PR-DNS results with appropriate modifications to the closures. The resulting verified 1D model was then used to simulate the reforming stage of an industrial scale packed bed chemical looping reforming reactor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Procedia - Volume 136, October 2017, Pages 349-355
نویسندگان
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