TY - JOUR T1 - On Fully Discrete Finite Element Schemes for Equations of Motion of Kelvin-Voigt Fluids JO - International Journal of Numerical Analysis and Modeling VL - 2 SP - 481 EP - 507 PY - 2013 DA - 2013/10 SN - 10 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnam/579.html KW - Viscoelastic fluids, Kelvin-Voigt model, a priori bounds, backward Euler method, second order backward difference scheme, optimal error estimates. AB -

In this paper, we study two fully discrete schemes for the equations of motion arising in the Kelvin-Voigt model of viscoelastic fluids. Based on a backward Euler method in time and a finite element method in spatial direction, optimal error estimates which exhibit the exponential decay property in time are derived. In the later part of this article, a second order two step backward difference scheme is applied for temporal discretization and again exponential decay in time for the discrete solution is discussed. Finally, a priori error estimates are derived and results on numerical experiments conforming theoretical results are established.