SPRAY: A smoothed particle radiation hydrodynamics code for modeling high intensity laser-plasma interactions
- Authors
- Jung, Min Ki; Kim, Hakhyeon; Park, Su-San; Kim, Eung Soo; Na, Yong-Su; Hahn, Sang June
- Issue Date
- Jul-2024
- Publisher
- Academic Press Inc.
- Keywords
- High energy density physics; HEDP; Laser-plasma interaction; Radiation hydrodynamics; RHD; Smoothed particle hydrodynamics; SPH
- Citation
- Journal of Computational Physics, v.508
- Journal Title
- Journal of Computational Physics
- Volume
- 508
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/73569
- DOI
- 10.1016/j.jcp.2024.113000
- ISSN
- 0021-9991
1090-2716
- Abstract
- Here we report the development of SPRAY, a massively parallel GPU accelerated, smoothed particle hydrodynamics (SPH)-based, radiation hydrodynamics (RHD) code designed specifically for simulating high intensity laser-plasma interactions. When a target is irradiated by an intense laser, highly complex fluid deformation occurs due to instabilities, which is challenging to study numerically. SPRAY is particle-based, mesh-free, and Lagrangian, which addresses numerical issues that posed difficulties to existing methods. Its SPH formulations for RHD governing equations are tailored toward accurate and reliable simulations of laser-target irradiation phenomena, and are solved via a time-dependent, flux-limited diffusion method. A new laser energy coupling module, which is based on the Wentzel-Kramers-Brillouin (WKB) approximation, is implemented with a totally mesh-free ray-tracing scheme that is applicable for arbitrary geometry and dimensions. The accuracy and reliability of the code are demonstrated with a series of benchmark problems. To the authors' knowledge, this is the first attempt to employ SPH method for simulations of laser-plasma interactions in high energy density physics research. Possible expansions to the code, such as laser beam-beam interaction modeling and more sophisticated multi-group radiation transport are left for future development. © 2024 Elsevier Inc.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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