Computational study of numerical flux schemes for mesoscale atmospheric flows in a Finite Volume framework
<|reference_start|>Computational study of numerical flux schemes for mesoscale atmospheric flows in a Finite Volume framework: We develop, and implement in a Finite Volume environment, a density-based approach for the Euler equations written in conservative form using density, momentum, and total energy as variables. Under simplifying assumptions, these equations are used to describe non-hydrostatic atmospheric flow. The well-balancing of the approach is ensured by a local hydrostatic reconstruction updated in runtime during the simulation to keep the numerical error under control. To approximate the solution of the Riemann problem, we consider four methods: Roe-Pike, HLLC, AUSM+-up and HLLC-AUSM. We assess our density-based approach and compare the accuracy of these four approximated Riemann solvers using two two classical benchmarks, namely the smooth rising thermal bubble and the density current.<|reference_end|>
@article{clinco2024computational,
    title={Computational study of numerical flux schemes for mesoscale atmospheric
  flows in a Finite Volume framework},
    author={Nicola Clinco, Michele Girfoglio, Annalisa Quaini, Gianluigi Rozza},
    journal={arXiv preprint arXiv:2404.19559},
    year={2024},
    archivePrefix={arXiv},
    eprint={2404.19559},
    primaryClass={math.NA cs.NA physics.ao-ph}
}