摘要
运用气固两相的颗粒群动力学模型，对Ｗｅｉｄｎｅｒ理论进行了改进，建立了悬浮稀疏气力输送系统中五种不同空间布置方式的弯管内颗粒群运动微分方程。该运动微分方程可用Ｅｕｌｅｒ－ｃａｕｃｈｙ、Ｒｕｎｇｅ－ｋｕｔａ、Ａｄａｍｓ、Ｈａｍｍｉｎｇ等方法进行数值求解。用所建立的运动微分方程分别求解了面粉和小麦气力输送系统中的弯道出口颗粒群速度，通过计算结果初步验证了运动微分方程的适用性。
By using the kinetic model of mass of particles in gas solid two phase flows,the authors improved the Weidner′s theory,established the movement differential equations for mass of particles in five kinds of elbows in suspended dilute pneumatic conveying system.We can get the numerical solutions to the differential equation by using Euler Cauchy,Runge Kutta,Adams,and Hamming methods.The authors also used the differential equations to calculate the velocity of mass of particles at the outlet of elbows in wheat and flour pneumatic conveying system.The suitability of the differential equations was verified by the calculation results.Finally,the authors pointed out the drawbacks in the design of flour positive pneumatic conveying systems,and emphasized the prolems which must be taken into account in the design of system.
出处
《郑州粮食学院学报》
1997年第1期34-40,共7页
Journal of Zhengzhou Institute of Technology
关键词
悬浮气力输送
弯管
颗粒群
运动微分方程
粮食
suspended pneumatic conveying
elbow
mass of particles
movement differential equation
