CFD study of a sudden-expanding coal combustor using Euler-Euler and Euler-Lagrange models

FUEL

卷:89

Article

Zhang, Yu¹  Wei, Xiao-Lin¹  Liu, Da-You¹ 

[1] Chinese Acad Sci, Inst Mech, Beijing 100864, Peoples R China

关键词: Multiphase turbulent flow;    Heterogeneous reactions;    Particle temperature fluctuation;   

DOI  :  10.1016/j.fuel.2010.07.038

来源: Elsevier

【 摘 要 】

In this study, the Euler-Euler (E-E) and Euler-Lagrange (E-L) models designed for the same chemical mechanism of heterogeneous reactions were used to predict the performance of a typical sudden-expanding coal combustor. The results showed that the current E-E model underestimated the coal burnout rate because the particle temperature fluctuation on char combustion is not adequately considered. A comparison of the E-E and E-L simulations showed the underestimation of heterogeneous chemical reaction rates by the E-E model. (C) 2010 Elsevier Ltd. All rights reserved.

【 授权许可】

Free