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Two-level stabilized nonconforming finite element algorithms for the conduction-convection equations

机译:导电对流方程的两级稳定不合格有限元算法

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摘要

In this article, we consider the two-level stabilized nonconforming finite element methods for the stationary conduction-convection equations based on local Gauss integration. The proposed methods are applied to solve conduction-convection equations with a special relationship of coarse mesh and fine mesh h=H/3 to avoid the coarse-to-fine intergrid operator. The methods involves three different corrections: Stokes correction, Oseen correction, and Newton correction. Moreover, the stability and convergence of the proposed methods are deduced. Finally, numerical results are shown to validate the theory analysis and demonstrate the effectiveness of the given methods.
机译:在本文中,我们考虑了基于局部高斯集成的固定导电 - 对流方程的两级稳定的不合格有限元方法。 所提出的方法用于解决带有粗网和精细网格H = H / 3的特殊关系的传导 - 对流方程,以避免粗致细的晶体算子。 该方法涉及三种不同的校正:Stokes校正,OSEEN校正和牛顿校正。 此外,推导出所提出的方法的稳定性和收敛性。 最后,显示了数值结果来验证理论分析并证明给定方法的有效性。

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