Ameliorating the Courant Limitation on Vacuum and GRMHD Simulation in Spherical-Polar Coordinates:

ORAL

Abstract

Spherical-like coordinates have many advantages when it comes to evolving systems that are approximately axially symmetric. This includes the remnants of compact-object mergers. However, the often severe Courant limitation associated with the origin and polar axis can make high-resolution simulations impractical. In this talk we describe two techniques for mitigating the Courant limitation using filtering algorithms

*We gratefully acknowledge the National Science Foundation for financial support from Grants No. PHY-1912632, No. AST-1516150, No. OAC-1550436, No. PHY-1726215, No. OAC-1811228

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Authors

  • Yosef Zlochower

    • Rochester Institute of Technology

  • Vassilios Mewes

    • National Center for Computational Sciences, Oak Ridge National Laboratory

  • Manuela Campanelli

    • Rochester Institute of Technology

  • Zachariah Etienne

    • West Virginia University

  • Thomas Baumgarte

    • Bowdoin College