hybridDCFoam: A coupled DSMC/Navier–Stokes–Fourier solver for steady-state multiscale rarefied gas flows

Vasileiadis, N.; White, C.

doi:10.1016/j.advengsoft.2024.103669

Advances in Engineering Software

2024

DOI: 10.1016/j.advengsoft.2024.103669

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hybridDCFoam: A coupled DSMC/Navier–Stokes–Fourier solver for steady-state multiscale rarefied gas flows

N. Vasileiadis,

C. White

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Cited by 3 publications

References 52 publications

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An evaluation of the hybrid Fokker–Planck-DSMC approach for high-speed rarefied gas flows

Kim,

Jun

2024

Computers & Fluids

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An evaluation of the hybrid Fokker–Planck-DSMC approach for high-speed rarefied gas flows

Kim,

Jun

2024

Computers & Fluids

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A DSMC-CFD coupling method using surrogate modelling for low-speed rarefied gas flows

Tatsios,

Chinnappan,

Kamal

et al. 2025

Journal of Computational Physics

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Underexpanded jet impingement in near vacuum environment

Subramanian,

Craig,

White

et al. 2024

Physics of Fluids

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Understanding the dynamics of rocket plume impingement on flat surfaces is critical for designing effective and sustainable landing pads. The current near vacuum study measures the surface pressures and temperature profiles arising on a flat surface due to highly underexpanded, axisymmetric plume impingement. The experiments were conducted in a dedicated, large-volume plume-regolith facility situated at the University of Glasgow. A total of eight tests were conducted, comprising of both constant and pulsed firing modes. The impingement plate is located at stand-off distances equal to 4 and 16 times the nozzle exit diameters and plate inclinations of 0° and 30°. Reduced stand-off distance increases impingement pressure, with a transient peak in the early stages of impingement indicating the presence of a primary shock wave. Higher stand-off distance resulted in decreased impingement pressure without an initial peak, but with a spike at the end of impingement once the nozzle had stopped firing. For inclined plates, the centerline impingement pressure magnitude decreased by around 40% compared with the 0° inclination. The measured pressures at lower stand-off height are then compared with the results of both a two-way coupled direct simulation Monte Carlo/Navier–Stokes–Fourier solver and an analytical theory. The results from all methods are in good agreement with each other, with the simulation and experimental centerline pressures being within 1% of each other. As the optical thickness of the gas is very low in the experimental case, the numerical method is used to generate a Schlieren image to analyze the shock structure.

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hybridDCFoam: A coupled DSMC/Navier–Stokes–Fourier solver for steady-state multiscale rarefied gas flows

Cited by 3 publications

References 52 publications

An evaluation of the hybrid Fokker–Planck-DSMC approach for high-speed rarefied gas flows

An evaluation of the hybrid Fokker–Planck-DSMC approach for high-speed rarefied gas flows

A DSMC-CFD coupling method using surrogate modelling for low-speed rarefied gas flows

Underexpanded jet impingement in near vacuum environment

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