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非对称不定椭圆方程的两网格内罚间断有限元方法

Two-Grid IPDG Method for Non-Symmetric Indefinite Elliptic Equations
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摘要 针对一类非对称或不定椭圆方程的内罚间断有限元方法,设计和分析了相应的两网格求解算法.首先给出了内罚间断有限元解的适定性,及其在L2和间断H1范数下的先验估计;其次设计了相应的两网格求解算法,并给出算法的误差分析;最后,数值实验结果验证了算法的高效性. A two-grid interior penalty discontious Galkerkin( IPDG) method for non-symmetric indefinite elliptic equations is proposed. Firstly,the well-posedness of IPDG method and the optimal error estimates in both L^2 norm and discontinuous H^1 norm are proved. Then,the corresponding two-grid method is designed and the error estimate of the algorithm is provided. At last,the efficiency of the algorithm is validated by numerical experiments.
出处 《华南师范大学学报(自然科学版)》 CAS 北大核心 2016年第3期7-13,共7页 Journal of South China Normal University(Natural Science Edition)
基金 国家自然科学基金项目(11201159) 全国博士学位论文作者专项资金项目(201212) 广东省高等学校优秀青年教师培养计划专项(Yq2013054) 湖南省自然科学基金项目(14JJ3135) 广州市珠江科技新星项目(2013J2200063)
关键词 非对称不定椭圆方程 内罚间断有限元方法 两网格方法 误差估计 non-symmetric indefinite elliptic equation interior penalty discontious Galkerkin method two-grid method error estimates
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