气流干燥过程的数学模拟  

Mathematics Simulation of Pneumatic Drying Process

作　　者：曾伍兰[1] 

机构地区：[1]潍坊学院化学系,潍坊261061

出　　处：《化工设备与管道》2006年第1期8-10,共3页Process Equipment & Piping

摘　　要：针对颗粒和空气在干燥管内的相互作用和传质传热机理,首先建立了直管式气流干燥数学模型,然后通过分析脉冲式气流干燥器的结构特点,求出了管径变化的微分方程,将其和直管式气流干燥的五个常微分方程耦合在一起,构成了脉冲式气流干燥的传质传热数学模型。根据模型方程的特点,运用四阶龙格-库塔法对其进行了数值求解。通过实验结果验证,该模型正确可靠。With respect to the mechanism of mass and heat transfer and interaction of the particles and air in drying tube, the mathematics model of pneumatic drying process in straight tube was first established. Then, throngh the analysis of the structure characteristics of impulse pneumatic dryer, the differential equation in which the variation of diametcr was taken into account was derived. Coupled this equation with another five differential equations, a whole mass and heat transfer mathematics model was formed. Based on the characteristics of the mode, the equations were solved by using four-order Runge-Kutta integration method. This correctness and applicability of the model has been proved by some experiments.

关 键 词：脉冲式气流干燥 数值模拟 模型 

分 类 号：TQ051[化学工程]