We consider a model for a granular flow in the slow erosion limit introduced in [31]. We propose an up-wind numerical scheme for this problem and show that the approximate solutions generated by the scheme converge to the unique entropy solution. Numerical examples are also presented showing the reliability of the scheme. We study also the finite time singularity formation for the model with the singularity tracking method, and we characterize the singularities as shocks in the solution.
Mots-clés : Entropy solutions, up-wind scheme, Engquist–Osher scheme, spectral analysis, complex singularities, granular flows
@article{M2AN_2020__54_2_465_0, author = {Coclite, Giuseppe Maria and Gargano, Francesco and Sciacca, Vincenzo}, title = {Up-wind difference approximation and singularity formation for a slow erosion model}, journal = {ESAIM: Mathematical Modelling and Numerical Analysis }, pages = {465--492}, publisher = {EDP-Sciences}, volume = {54}, number = {2}, year = {2020}, doi = {10.1051/m2an/2019068}, mrnumber = {4065142}, zbl = {1434.76083}, language = {en}, url = {http://www.numdam.org/articles/10.1051/m2an/2019068/} }
TY - JOUR AU - Coclite, Giuseppe Maria AU - Gargano, Francesco AU - Sciacca, Vincenzo TI - Up-wind difference approximation and singularity formation for a slow erosion model JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2020 SP - 465 EP - 492 VL - 54 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/m2an/2019068/ DO - 10.1051/m2an/2019068 LA - en ID - M2AN_2020__54_2_465_0 ER -
%0 Journal Article %A Coclite, Giuseppe Maria %A Gargano, Francesco %A Sciacca, Vincenzo %T Up-wind difference approximation and singularity formation for a slow erosion model %J ESAIM: Mathematical Modelling and Numerical Analysis %D 2020 %P 465-492 %V 54 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/m2an/2019068/ %R 10.1051/m2an/2019068 %G en %F M2AN_2020__54_2_465_0
Coclite, Giuseppe Maria; Gargano, Francesco; Sciacca, Vincenzo. Up-wind difference approximation and singularity formation for a slow erosion model. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 54 (2020) no. 2, pp. 465-492. doi : 10.1051/m2an/2019068. http://www.numdam.org/articles/10.1051/m2an/2019068/
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