RT info:eu-repo/semantics/article T1 Fully Discrete Approximations to the Time-Dependent Navier–Stokes Equations with a Projection Method in Time and Grad-Div Stabilization A1 Frutos Baraja, Francisco Javier de A1 García Archilla, Juan Bosco A1 Novo, Julia AB This paper studies fully discrete approximations to the evolutionary Navier{Stokes equations by means of inf-sup stable H1-conforming mixed nite elementswith a grad-div type stabilization and the Euler incremental projection method intime. We get error bounds where the constants do not depend on negative powersof the viscosity. We get the optimal rate of convergence in time of the projectionmethod. For the spatial error we get a bound O(hk) for the L2 error of the velocity,k being the degree of the polynomials in the velocity approximation. We provenumerically that this bound is sharp for this method. SN 0885-7474 YR 2019 FD 2019 LK http://uvadoc.uva.es/handle/10324/37936 UL http://uvadoc.uva.es/handle/10324/37936 LA spa NO Journal of Scientific Computing. 80 (2019), 1330-1368 DS UVaDOC RD 23-nov-2024