空气分级煤粉炉NO生成的数值模拟

R. Straka, M. Beneš
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引用次数: 3

摘要

我们使用空气和煤颗粒混合物的Navier-Stokes方程来描述空气-煤混合物的行为,并伴有湍流模型。正在进行的化学反应用阿累尼动力学(反应速率与RT E成正比)来描述。我们还考虑了通过传导和辐射的传热。采用有限体积法(FVM)和平流上游分裂法作为Riemann解算器对偏微分方程系统进行离散。利用四阶龙格-库塔法求解得到的ode。给出了典型发电水平下的仿真结果以及空气分级对NO生成的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical Simulation of NO Production in Air-Staged Pulverized Coal Fired Furnace
We describe behavior of the air-coal mixture using the Navier-Stokes equations for the mixture of air and coal particles, accompanied by a turbulence model. The undergoing chemical reactions are described by the Arrhenian kinetics (reaction rate proportional to RT E e  ). We also consider the heat transfer via conduction and radiation. The system of PDEs is discretized using the finite volume method (FVM) and an advection upstream splitting method as the Riemann solver. The resulting ODEs are solved using the 4th-order Runge-Kutta method. Simulation results for typical power production level are presented together with the air-staging impact on NO production.
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