We present a new semi-discrete central scheme for one-dimensional shallow water flows along channels with non-uniform rectangular cross sections and bottom topography. The scheme preserves the positivity of the water height, and it is preserves steady-states of rest (i.e., it is well-balanced). Along with a detailed description of the scheme, numerous numerical examples are presented for unsteady and steady flows. Comparison with exact solutions illustrate the accuracy and robustness of the numerical algorithm.
Keywords: hyperbolic systems of conservation and balance laws, semi-discrete schemes, Saint-Venant system of shallow water equations, non-oscillatory reconstructions, channels with irregular geometry
@article{M2AN_2009__43_2_333_0,
author = {Balb\'as, Jorge and Karni, Smadar},
title = {A central scheme for shallow water flows along channels with irregular geometry},
journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
pages = {333--351},
year = {2009},
publisher = {EDP Sciences},
volume = {43},
number = {2},
doi = {10.1051/m2an:2008050},
mrnumber = {2512499},
zbl = {1159.76026},
language = {en},
url = {https://www.numdam.org/articles/10.1051/m2an:2008050/}
}
TY - JOUR AU - Balbás, Jorge AU - Karni, Smadar TI - A central scheme for shallow water flows along channels with irregular geometry JO - ESAIM: Modélisation mathématique et analyse numérique PY - 2009 SP - 333 EP - 351 VL - 43 IS - 2 PB - EDP Sciences UR - https://www.numdam.org/articles/10.1051/m2an:2008050/ DO - 10.1051/m2an:2008050 LA - en ID - M2AN_2009__43_2_333_0 ER -
%0 Journal Article %A Balbás, Jorge %A Karni, Smadar %T A central scheme for shallow water flows along channels with irregular geometry %J ESAIM: Modélisation mathématique et analyse numérique %D 2009 %P 333-351 %V 43 %N 2 %I EDP Sciences %U https://www.numdam.org/articles/10.1051/m2an:2008050/ %R 10.1051/m2an:2008050 %G en %F M2AN_2009__43_2_333_0
Balbás, Jorge; Karni, Smadar. A central scheme for shallow water flows along channels with irregular geometry. ESAIM: Modélisation mathématique et analyse numérique, Tome 43 (2009) no. 2, pp. 333-351. doi: 10.1051/m2an:2008050
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