空气重介质流化床的双流体模型及其数值验证  

Double-Fluid Model and Numerical Test of Air Dense Medium Fluidized Bed for Dry Coal Separating

作　　者：管玉平[1] 徐守坤[2] 陈清如[1] 赵跃民[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221008 [2]江苏石油化工学院计算机系,江苏常州213016

出　　处：《中国矿业大学学报》2001年第6期554-557,共4页Journal of China University of Mining & Technology

基　　金：国家自然科学基金资助项目 ( 5 99740 30 ) ;国家杰出青年科学基金资助项目 ( 5 0 0 2 5 41) ;高等学校骨干教师资助计划 ( 2 0 0 0 -65 )

摘　　要：为了研究室气重介质流化床的分选机理 ,用双流体方法建立了描述空气重介质流化床的模型方程组 ,给出了模型中各项的物理意义 ,确定了模型参数 .使用控制容积有限差分法将模型方程离散化 ,求解方程采用迭代方法 ,并计算了空气重介质流化床的密度分布 ,其结果与实验吻合 ,验证了模型的正确性 .The two fluid model (TFM) of air dense medium fluidized bed (ADMFB) was developed. The physical meaning of each item in this model was given, and the parameters were also defined. The derivation of discretization equation was made by finite-volume method based on control volume. Using three kinds of iteration to solve the model, and the program was developed by C++. The density distribution was computed by using this program. The results is in agreement with the experimental data testifying that the model is suitable for ADMFB.

关 键 词：空气重介质流化床 双流体模型 密度分布 数值模拟 分选机理 选煤 

分 类 号：TD922[矿业工程—选矿] TD94