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中文摘要：
本文研究Q2-P1混合元对Stokes型积分-微分方程的有限元方法.利用积分恒等式技巧给出了关于流体速度u和压力p的误差估计,特别是在压力p的误差中去掉了影响解的稳定性的1因子t-2,改善了以往文献的结果.同时,通过构造适当的插值后处理算子得到了整体超收敛结果.
英文摘要：
The Q2- P1 mixed finite element method is discussed for the Stokes type integro-differential equations. The error estimations of fluid velocity u and pressure p are given1 by the integral identity technique. Especially, in the estimation of pressure p the factor t-2which influences the stability of solution is removed and thus the existing results are improved accordingly. At the same time, the global superconvergence of order is derived based on the interpolation postprocessing approach.
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