The SUNSHYNE software package for simulating compressible gas flows on hybrid CPU/GPU systems

A. A. Shershnev, A. N. Kudryavtsev, A. V. Kashkovskii, G. V. Shoev, S. P. Borisov, T. Yu. Shkredov, D. P. Polevshchikov, D. V. Khotyanovsky, Yu. V. Kratova, P. V. Vashchenkov, A. S. Litvintsev, T. A. Polyanskii, E. A. Bondar'

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: We present the SUNSHYNE software package, designed for numerical simulation of compressible gas flows on modern high-performance computing systems, including those accelerated by high-performance graphics processing units (GPUs). The package features a graphical user interface and enables simulations in complex geometries for industrial applications. This is facilitated by versatile boundary condition specification, support for unstructured and block-structured grids, and integration with computer-aided design systems. The paper touches upon the implemented physical models, numerical methods, and functional capabilities of the package. Example simulations are provided, including non-equilibrium flows, direct numerical simulation of transition to turbulence, and heterogeneous detonation.

Keywords: Navier–Stokes equation, non-equilibrium flow, shock-capturing scheme, GPU, software package.

UDC: 533.6

Received: 20.06.2025
Revised: 20.06.2025
Accepted: 23.06.2025

DOI: 10.15372/PMTF202515704

 English version: Journal of Applied Mechanics and Technical Physics, 2025, 66:5, 961–978

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