3C章利用交替分段显-隐式差分方法研究了一类一维变系数扩散方程的初边值问题,给出了数值求解过程,建立了相应的稳定性分析和截断误差估计,并以具体的变系数扩散方程为例,利用交替分段显-隐式差分格式对其进行了数值求解。数值模拟结果表明,该格式具有易于计算、精确度高、无条件稳定等特点。
One-dimensional diffusion equation with variable coefficients is studied by use of alternating segment explicit-implicit difference method. Numerical computation, stability analysis and truncation error estimation processes are carried out with the specific diffusion equation, which is solved numerically based on alternating segment explicit-implicit difference scheme. The results of numerical simulation show the advantages of simple computation, high precision, absolute stability, etc.