Title
On Fully Implicit Space-Time Discretization for Motions of Incompressible Fluids with Shear-Dependent Viscosities: The Case $p \le 2 $
Abstract
In this paper, we deal with a rigorous error analysis for a fully implicit space-time discretization of an unsteady, non-Newtonian fluid flow model, where the nonlinear operator related to the stress tensor exhibits p-structure. In a first step, a semidiscretization in time using the implicit Euler method is discussed. Due to limitation of regularity of the solution for the case $p \neq 2$, a decrease with respect to convergence rates of the method is stated, in general, by retaining smoothly first order in appropriate norms for the Stokes law (i.e., p = 2). The analysis is then extended to a full discretization using stable pairings of finite element spaces in a second step.
Year
DOI
Venue
2001
10.1137/S0036142900371209
SIAM Journal on Numerical Analysis
Keywords
Field
DocType
rigorous error analysis,appropriate norm,full discretization,incompressible fluids,implicit euler method,stable pairings,implicit space-time discretization,finite element space,non-newtonian fluid flow model,stokes law,nonlinear operator,shear-dependent viscosities,space time,incompressible fluid
Discretization,Mathematical analysis,Finite element method,Newtonian fluid,Rate of convergence,Incompressible flow,Cauchy stress tensor,Backward Euler method,Mathematics,Navier–Stokes equations
Journal
Volume
Issue
ISSN
39
1
0036-1429
Citations 
PageRank 
References 
6
1.81
0
Authors
2
Name
Order
Citations
PageRank
Andreas Prohl130267.29
Michael Ruzicka293.93