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
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
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
关键词
气-固流化床
双流体力学模型
SIMPLE算法
煤气化
twodimensional jetting fluidized bed
improved SIMPLE method
twofluid model
CASICC software
flow fluid characteristics
