We develop an entropy-stable nodal discontinuous Galerkin (DG) scheme for the Euler equations with gravity, which is also well-balanced with respect to general equilibrium solutions, including both hydrostatic and moving equilibria. The core of our approach lies in a novel treatment of the gravitational source term, combining entropy-conservative numerical fluxes with a linear entropy correction. In addition, the proposed formulation is carefully designed to ensure compatibility with a positivity-preserving limiter. We provide a rigorous theoretical analysis to establish the accuracy and structure-preserving properties of the proposed scheme. Extensive numerical experiments confirm the robustness and efficiency of the scheme.
@article{arxiv.2507.21948,
title = {Structure-preserving nodal DG method for Euler equations with gravity II: general equilibrium states},
author = {Yuchang Liu and Wei Guo and Yan Jiang and Mengping Zhang},
journal= {arXiv preprint arXiv:2507.21948},
year = {2026}
}