On error estimates of the penalty method for the viscoelastic flow problem I: Time discretization

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Abstract

In this paper, we investigate the two-dimensional viscoelastic fluid motion problem arising in the Oldroyd model. By applying the dual method, the Helmholtz decomposition and some other techniques, we deduce the long-time optimal error estimates for its penalty method. Furthermore, the global optimal error bounds in the L2 and H1-norms for the time semi-discrete of the penalty system are derived under the backward Euler implicit scheme, which improves the best estimate available. © 2010 Elsevier Inc.

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Wang, K., He, Y., & Feng, X. (2010). On error estimates of the penalty method for the viscoelastic flow problem I: Time discretization. Applied Mathematical Modelling, 34(12), 4089–4105. https://doi.org/10.1016/j.apm.2010.04.008

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