کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9629076 | 461271 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simulation of coal combustion by AUSM turbulence-chemistry char combustion model and a full two-fluid model
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Simulation of coal combustion by AUSM turbulence-chemistry char combustion model and a full two-fluid model Simulation of coal combustion by AUSM turbulence-chemistry char combustion model and a full two-fluid model](/preview/png/9629076.png)
چکیده انگلیسی
An algebraic unified second-order moment (AUSM) turbulence-chemistry model of char combustion is introduced in this paper, to calculate the effect of particle temperature fluctuation on char combustion. The AUSM model is used to simulate gas-particle flows, in coal combustion in a pulverized coal combustor, together with a full two-fluid model for reacting gas-particle flows and coal combustion, including the sub-models as the k-ε-kp two-phase turbulence model, the EBU-Arrhenius volatile and CO combustion model, and the six-flux radiation model. A new method for calculating particle mass flow rate is also used in this model to correct particle outflow rate and mass flow rate for inside sections, which can obey the principle of mass conservation for the particle phase and can also speed up the iterating convergence of the computation procedure effectively. The simulation results indicate that, the AUSM char combustion model is more preferable to the old char combustion model, since the later totally eliminate the influence of particle temperature fluctuation on char combustion rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 84, Issues 14â15, October 2005, Pages 1798-1804
Journal: Fuel - Volume 84, Issues 14â15, October 2005, Pages 1798-1804
نویسندگان
Yu Zhang, Xiao-Lin Wei, Li-Xing Zhou, Hong-Zhi Sheng,