Using the entropy-based flux limiter in both eccentricity reduction and evolution yields apparent fifth-order convergence in binary neutron star waveform phase.
Entropy based flux limiting scheme for conservation laws
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abstract
The entropy based flux-limiting (EFL) scheme is a novel approach designed to accurately resolve shocks and discontinuities in special and general relativistic hydrodynamics. By adaptively adjusting the numerical fluxes, the EFL method mitigates oscillations and preserves smooth transition across discontinuities in shock-dominated flows. Here, we extend the applicability of the EFL method beyond special/general relativistic hydrodynamics to scalar conservation laws and show how to treat systems without a thermodynamic entropy. This is an indication that the method has universal applicability to any system of partial differential equations that can be written in conservation form. We also present some further very challenging special/general relativistic hydrodynamics applications of the EFL method.
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Eccentricity reduction of binary neutron star initial data with the entropy based flux limiting scheme
Using the entropy-based flux limiter in both eccentricity reduction and evolution yields apparent fifth-order convergence in binary neutron star waveform phase.