Journal
APPLIED MATHEMATICS AND COMPUTATION
Volume 357, Issue -, Pages 35-56Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.amc.2019.03.043
Keywords
Navier-Stokes equations; Parallel algorithm; Finite element method; Stabilized method
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Funding
- Natural Science Foundation of China [11361016]
- Basic and Frontier Explore Program of Chongqing Municipality, China [cstc2018jcyjAX0305]
- Funds for the Central Universities [XDJK2018B032]
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Based on a fully overlapping domain decomposition technique and the lowest equal-order finite elements, three parallel iterative stabilized finite element algorithms for the stationary Navier-Stokes equations are proposed and studied, where the stabilization term is based on two local Gauss integrations at element level. In these parallel algorithms, each processor independently computes a local stabilized solution in its own subdomain, making the algorithms have low communication cost and easy to implement based on a sequential solver. The algorithms can yield an approximate solution with an accuracy comparable to that of the standard stabilized finite element solution with a substantial reduction in computational time. Theoretical and numerical results demonstrated the effectiveness and efficiency of the algorithms. (c) 2019 Elsevier Inc. All rights reserved.
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