Cold Flow Simulation of a ۳۰ kWth CFB Riser with CPFD
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 149
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شناسه ملی سند علمی:
JR_JAFM-13-2_018
تاریخ نمایه سازی: 15 دی 1400
چکیده مقاله:
A ۳۰ kWth Circulating fluidized bed (CFB) combustor is experimentally and numerically investigated under cold flow conditions. Barracuda software based on Computational Particle Fluid Dynamics (CPFD) method is utilized for simulations. The influences of bed inventory and drag model on flow hydrodynamics were investigated considering pressure and velocity profiles and particle concentration. Two advanced drag models, namely Energy minimization multi-scale (EMMS) and Wen-Yu/Ergun were selected for this study. The simulations were performed with initial bed material masses of ۳.۷۹, ۴.۵۵ and ۵.۲۰ kg corresponding to ۲.۵, ۳ and ۳.۵ diameters height of riser, respectively. With increasing bed inventory pressure drops and solid concentration increase. The axial particle velocities slightly change with bed inventory. The comparison of simulation results with experimental measurements was resulted in good agreement (
کلیدواژه ها:
نویسندگان
D. Gündüz Raheem
Marmara University, Institute of Pure and Applied Sciences, Kadikoy, Istanbul, ۳۴۷۲۲, Turkey
B. Yılmaz
Marmara University, Institute of Pure and Applied Sciences, Kadikoy, Istanbul, ۳۴۷۲۲, Turkey
S. Özdoğan
Marmara University, Institute of Pure and Applied Sciences, Kadikoy, Istanbul, ۳۴۷۲۲, Turkey