气-固流化床反应器内双流体力学模型及其验证 Ⅱ.单组分两维射流床内流场特性分析  

A TWOFLUID MODEL AND ITS VERIFICATION IN GASSOLID FLUIDIZED REACTORS Ⅱ ANALYSIS OF FLOW FIELD IN A TWODIMENSIONAL JETTING FLUIDIZED BED COMPOSED OF SINGLECOMPONENT PARTICLE

作　　者：张锴[1] 张济宇[1] 张碧江[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《燃料化学学报》1997年第5期389-394,共6页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金;山西煤化所所长基金

摘　　要：由以质量、动量和能量三大守恒定律为基础的湍流两相流理论出发，建立了描述气固流化床内两相流动的数学模型；在微型计算机上编写了相应的数值计算和图形处理程序；为了验证模型的可靠性，本文着手模拟与分析了单组分颗粒体系两维射流流化床内气、固相速度场、空隙度和压力场随时间、空间变化规律；得到了与前人实验结果相吻合的结论。A comprehensive mathematical model, derived from the theory of "TwoFluid of Turbulent" based on balances of mass, momentum, and thermal energy conservation in each phase, showed a perfect prediction of flow field characteristics in gassolid fluidized reactors; The modified SIMPLE method was employed in the solution of the control equations and a simulated software named as CASICC was developed As a function of position and time, the variation of void fraction, pressure, and gas and solid velocities in a cold twodimensional jetting fluidized bed of singlecomponent particle was satisfactorily simulated by this theoretical model The calculation was done for two monosized solid particles and the results agreed well with the conclusions by other researchers

关 键 词：气-固流化床 双流体力学模型 SIMPLE算法 煤气化 

分 类 号：TQ021.1[化学工程] TQ541