High-fidelity Sound Propagation in a Varying 3D Atmosphere

@article{Rydin2018HighfidelitySP,
  title={High-fidelity Sound Propagation in a Varying 3D Atmosphere},
  author={Ylva Rydin and Ken Mattsson and Jonatan Werpers},
  journal={Journal of Scientific Computing},
  year={2018},
  volume={77},
  pages={1278-1302}
}
A stable and high-order accurate upwind finite difference discretization of the 3D linearized Euler equations is presented. The discretization allows point sources, a varying atmosphere and curved topography. The advective terms are discretized using recently published upwind summation-by-parts (SBP) operators and the boundary conditions are imposed using a penalty technique. The resulting discretization leads to an explicit ODE system. The accuracy and stability properties are verified for a… 
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