@Article{CiCP-16-1239,
author = {},
title = {New Splitting Methods for Convection-Dominated Diffusion Problems and Navier-Stokes Equations},
journal = {Communications in Computational Physics},
year = {2014},
volume = {16},
number = {5},
pages = {1239--1262},
abstract = {<p style="text-align: justify;">We present a new splitting method for time-dependent convention-dominated diffusion problems. The original convention diffusion system is split into two
sub-systems: a pure convection system and a diffusion system. At each time step, a
convection problem and a diffusion problem are solved successively. A few important features of the scheme lie in the facts that the convection subproblem is solved
explicitly and multistep techniques can be used to essentially enlarge the stability region so that the resulting scheme behaves like an unconditionally stable scheme; while
the diffusion subproblem is always self-adjoint and coercive so that they can be solved
efficiently using many existing optimal preconditioned iterative solvers. The scheme
can be extended for solving the Navier-Stokes equations, where the nonlinearity is
resolved by a linear explicit multistep scheme at the convection step, while only a generalized Stokes problem is needed to solve at the diffusion step and the major stiffness
matrix stays invariant in the time marching process. Numerical simulations are presented to demonstrate the stability, convergence and performance of the single-step
and multistep variants of the new scheme.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.031013.030614a},
url = {http://global-sci.org/intro/article_detail/cicp/7079.html}
}