研究了一般抛物方程的一种区域分解差分算法,在内边界点上采用小时间步长^△t,空间上以步长h^-进行J计算,提高了整体的计算精度.给出了一、二维两种情形下的算法和误差估计,并用数值实验证明了结论.
The domain decomposition finite difference algorithm is dealt with for parabolic problems with variable coefficient. The basic procedure is to define explicit difference schemes at the interface point with smaller rune step ^-△t = △t/J, (J is a positive integer. ) and larger space step h^-, for improving the total aeeuracy. Algorithm and error estimates in one and two space dimensions are derived. At last, a numerical experiment is presented to eonfirm the conclusion.