@Article{CiCP-30-666, author = {P. Berberich , JonasKäppeli , RogerChandrashekar , Praveen and Klingenberg , Christian}, title = {High Order Discretely Well-Balanced Methods for Arbitrary Hydrostatic Atmospheres}, journal = {Communications in Computational Physics}, year = {2021}, volume = {30}, number = {3}, pages = {666--708}, abstract = {

We introduce novel high order well-balanced finite volume methods for the full compressible Euler system with gravity source term. They require no à priori knowledge of the hydrostatic solution which is to be well-balanced and are not restricted to certain classes of hydrostatic solutions. In one spatial dimension we construct a method that exactly balances a high order discretization of any hydrostatic state. The method is extended to two spatial dimensions using a local high order approximation of a hydrostatic state in each cell. The proposed simple, flexible, and robust methods are not restricted to a specific equation of state. Numerical tests verify that the proposed method improves the capability to accurately resolve small perturbations on hydrostatic states.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2020-0153}, url = {http://global-sci.org/intro/article_detail/cicp/19307.html} }