TY - JOUR
T1 - Incremental unknowns method for solving three-dimensional convection-diffusion equations
AU - L. Song & Y. Wu
JO - Numerical Mathematics, a Journal of Chinese Universities
VL - 1
SP - 14
EP - 27
PY - 2007
DA - 2007/02
SN - 16
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/nm/8046.html
KW - 
AB - 
We use the incremental unknowns method in conjunction with the iterative
methods to approximate the solution of the nonsymmetric and
positive-definite linear systems generated from a multilevel
discretization of three-dimensional convection-diffusion equations.
The condition numbers of incremental unknowns matrices  associated
with the convection-diffusion equations and the number of iterations
needed to attain an acceptable accuracy are estimated. Numerical
results are presented with two-level approximations, which
demonstrate that the incremental unknowns method when combined with
some iterative methods is very efficient.