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- W4285069905 abstract "The diversity of the structures recently observed in protoplanetary discs (PPDs) with the new generation of high-resolution instruments have made more acute the challenging questions that planet-formation models must answer. The challenge is in the theoretical side but also in the numerical one with the need to significantly improve the performances of the codes and to stretch the limit of PPD simulations. Multi-physics, fast, accurate, high-resolution, modular, and reliable 3D codes are needed to explore the mechanisms at work in PPDs and to try explaining the observed features. We present RoSSBi3D the 3D extension of the 2D code Rotating-System Simulations for Bi-fluids (RoSSBi) which was specifically developed to study the evolution of PPDs. This is a new code, even if based on the 2D version, that we describe in detail explaining its architecture and specificity but also its performances against test cases. This grid-based, FORTRAN code solves the fully compressible inviscid continuity, Euler and energy conservation equations for an ideal gas in non-homentropic conditions and for pressureless particles in a fluid approximation. It is a finite volume code which is second order in time and accounts for discontinuities thanks to an exact Riemann solver. The spatial scheme accounts for the equilibrium solution and is improved thanks to parabolic interpolation. The code is developed in 3D and structured for high-performance parallelism. The optimised version of the code works on high-performance computers with excellent scalability. We checked its reliability against a 2D analogue of the sod shock tube test and a series of tests. We release this code under the terms of the CeCILL2 Licence and make it publicly available." @default.
- W4285069905 created "2022-07-13" @default.
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- W4285069905 date "2022-07-09" @default.
- W4285069905 modified "2023-09-23" @default.
- W4285069905 title "RoSSBi3D: a 3D and bi-fluid code for protoplanetary discs" @default.
- W4285069905 doi "https://doi.org/10.48550/arxiv.2207.04252" @default.
- W4285069905 hasPublicationYear "2022" @default.
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