论文部分内容阅读
本文利用传热传质基本关系,较精确地导出了转筒式干燥过程的数学模型,以具有分裂边界条件的四联立非线性双曲线形偏微分方程组描述。借助于中心差分法变换,得到相应的数值模型,它可表示为耦合非线性二元三对角阵系统。所设计的算法解决了方程式的隐函性和边界条件的两端突变值等问题造成的求解困难,获得了较精确的数值解,实现了数字仿真。
In this paper, we use the basic relation of heat and mass transfer to derive the mathematic model of the drum drying process more accurately and describe it as a quadrilateral set of nonlinear hyperbolic differential equations with splitting boundary conditions. By means of the central difference method transformation, a corresponding numerical model is obtained, which can be expressed as coupled nonlinear binary tridiagonal matrix system. The designed algorithm solves the problem of solving problems caused by the implicit function of the equation and the abrupt change of the boundary conditions, and obtains the accurate numerical solution and realizes the digital simulation.