摘要
基于Richardson外推法提出了一种数值求解二维热传导方程的高阶紧致差分方法.该方法首先利用时间二阶、空间四阶精度的紧致交替方向隐式(ADI)差分格式在不同尺寸的网格上对原方程进行求解,然后利用Richardson外推技术外推一次,最终得到了二维热传导方程时间四阶、空间六阶精度的数值解,数值实验验证了该方法的高阶精度及有效性.
A high-order compact difference method,which is based on the Richardson extrapolation technique,has been proposed to solve the two-dimensional heat equation.Firstly,numerical results have been obtained on different-size meshes by means of a high order alternating direction implicit(ADI)difference scheme,which is second order accurate in time and fourth order accurate in space.Then,the Richardson extrapolation method has been employed to compute a more accurate solution,which is fourth order accurate in time and sixth order accurate in space.The numerical results are given to demonstrate the high accuracy and effectiveness of the present method.
出处
《西南师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2013年第12期50-54,共5页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(11061025
11361045)
霍英东教育基金会高等院校青年教师基金(121105)